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<feed xmlns="http://www.w3.org/2005/Atom"><title>balkian.com</title><link href="http://balkian.com/" rel="alternate"></link><link href="http://balkian.com/feeds/all.atom.xml" rel="self"></link><id>http://balkian.com/</id><updated>2019-01-06T10:00:00+01:00</updated><entry><title>Controlling Zigbee devices with MQTT</title><link href="http://balkian.com/controlling-zigbee-devices-with-mqtt.html" rel="alternate"></link><published>2019-01-06T10:00:00+01:00</published><updated>2019-01-06T10:00:00+01:00</updated><author><name>J. Fernando Sánchez</name></author><id>tag:balkian.com,2019-01-06:/controlling-zigbee-devices-with-mqtt.html</id><summary type="html">&lt;p&gt;This is a short tutorial on connecting a zigbee device (an Aqara cube) to an MQTT server, so you can control your zigbee devices from the network.&lt;/p&gt;
&lt;p&gt;If you're anything like me, you're probably a sucker for IoT devices.
For a long time, I've been using WiFi-enabled lights, and Amazon …&lt;/p&gt;</summary><content type="html">&lt;p&gt;This is a short tutorial on connecting a zigbee device (an Aqara cube) to an MQTT server, so you can control your zigbee devices from the network.&lt;/p&gt;
&lt;p&gt;If you're anything like me, you're probably a sucker for IoT devices.
For a long time, I've been using WiFi-enabled lights, and Amazon dash buttons to control them.
To keep these (cheap Chinese) internet enabled devices away from your network and their respective cloud services, you'll probably want to set up a dedicated network in your router (more on this on a future post, maybe).
Another disadvantage of WiFi devices is that they're relatively power hungry.&lt;/p&gt;
&lt;p&gt;A popular alternative is using ZigBee for communication.
It is a dedicated protocol similar to bluetooth (BLE), with lower power requirements and bitrate.&lt;/p&gt;
&lt;p&gt;Take the (super cute) aqara cube as an example.
It is a small cube that detects rotation on all of its axes, and tapping events.
Here's a video:&lt;/p&gt;
&lt;div class="youtube youtube-16x9"&gt;&lt;iframe src="https://www.youtube.com/embed/5YtqG1wEnng" allowfullscreen seamless frameBorder="0"&gt;&lt;/iframe&gt;&lt;/div&gt;&lt;p&gt;To connect to zigbee devices you will need a zigbee enabled gateway (a.k.a. hub), which connects to your WiFi network and your zigbee devices.
Once again, this means adding an internet-enabled device to your home, and probably a couple of cloud services.&lt;/p&gt;
&lt;p&gt;As an alternative, you can set up your own zigbee gateway, and control it to your home automation platform of choice (e.g. home assistant).
We will cover how to set up a zigbee2mqtt gateway that is also connected to an MQTT server, so you can use MQTT to control your devices and get notifications.&lt;/p&gt;
&lt;p&gt;What you need:&lt;/p&gt;
&lt;ul class="simple"&gt;
&lt;li&gt;&lt;a class="reference external" href="https://www.aliexpress.com/item/Original-Xiaomi-Mi-Aqara-Cube-Smart-Home-Controller-6-Action-Operation-Fr-Home-Device-Zigbee-Version/32892947622.html?spm=a2g0s.9042311.0.0.3da24c4dXV8sBI"&gt;Aqara cube&lt;/a&gt;.&lt;/li&gt;
&lt;li&gt;&lt;a class="reference external" href="https://www.aliexpress.com/item/Wireless-Zigbee-CC2531-CC2540-Zigbee-Sniffer-Bluetooth-BLE-4-0-Dongle-Capture-Module-USB-Programmer-Downloader/32907587711.html?spm=a2g0s.9042311.0.0.3da24c4dXV8sBI"&gt;CC2531 zigbee sniffer&lt;/a&gt;.&lt;/li&gt;
&lt;li&gt;&lt;a class="reference external" href="https://www.aliexpress.com/item/CFSUNBIRD-CC-DEBUGGER-Debugger-and-Programmer-for-RF-System-on-Chips-TI-ORIGINAL-Fast-hipping/32813122315.html?spm=a2g0s.9042311.0.0.3da24c4dXV8sBI"&gt;CC-debugger&lt;/a&gt;.&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;You will need to flash your sniffer.
For that, you only need to follow the instructions from the &lt;a class="reference external" href="https://koenkk.github.io/zigbee2mqtt/"&gt;zigbee2mqtt documentation&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;Once you're done flashing, you're ready to set up the zigbee2mqtt server.
For convenience, I wrote a simple docker-compose to deploy a zigbee2mqtt server and a test mosquitto server:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt; 1
2
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33&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;version: &amp;#39;2.1&amp;#39;
services:
zigbee2mqtt:
image: koenkk/zigbee2mqtt
container_name: zigbee2mqtt
restart: always
volumes:
- ./z2m-data/:/app/data/
devices:
- &amp;quot;/dev/ttyACM0&amp;quot;
networks:
- hass
mqtt:
image: eclipse-mosquitto
ports:
- 1883:1883
- 9001:9001
networks:
- hass
volumes:
- ./mosquitto.conf:/mosquitto/config/mosquitto.conf
hass:
image: homeassistant/home-assistant
ports:
- &amp;quot;8123:8123&amp;quot;
networks:
- hass
volumes:
- ./hass-config:/config
- &amp;quot;/etc/localtime:/etc/localtime:ro&amp;quot;
networks:
hass:
driver: overlay
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;You can test your installation with:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2
3
4
5
6&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt; ❯ mosquitto_sub -h localhost -p &lt;span class="m"&gt;1883&lt;/span&gt; -t &lt;span class="s1"&gt;&amp;#39;zigbee2mqtt/#&amp;#39;&lt;/span&gt;
online
&lt;span class="o"&gt;{&lt;/span&gt;&lt;span class="s2"&gt;&amp;quot;battery&amp;quot;&lt;/span&gt;:17,&lt;span class="s2"&gt;&amp;quot;voltage&amp;quot;&lt;/span&gt;:2925,&lt;span class="s2"&gt;&amp;quot;linkquality&amp;quot;&lt;/span&gt;:149,&lt;span class="s2"&gt;&amp;quot;action&amp;quot;&lt;/span&gt;:&lt;span class="s2"&gt;&amp;quot;rotate_right&amp;quot;&lt;/span&gt;,&lt;span class="s2"&gt;&amp;quot;angle&amp;quot;&lt;/span&gt;:12.8&lt;span class="o"&gt;}&lt;/span&gt;
&lt;span class="o"&gt;{&lt;/span&gt;&lt;span class="s2"&gt;&amp;quot;battery&amp;quot;&lt;/span&gt;:17,&lt;span class="s2"&gt;&amp;quot;voltage&amp;quot;&lt;/span&gt;:2925,&lt;span class="s2"&gt;&amp;quot;linkquality&amp;quot;&lt;/span&gt;:141,&lt;span class="s2"&gt;&amp;quot;action&amp;quot;&lt;/span&gt;:&lt;span class="s2"&gt;&amp;quot;slide&amp;quot;&lt;/span&gt;,&lt;span class="s2"&gt;&amp;quot;side&amp;quot;&lt;/span&gt;:2&lt;span class="o"&gt;}&lt;/span&gt;
&lt;span class="o"&gt;{&lt;/span&gt;&lt;span class="s2"&gt;&amp;quot;battery&amp;quot;&lt;/span&gt;:17,&lt;span class="s2"&gt;&amp;quot;voltage&amp;quot;&lt;/span&gt;:2925,&lt;span class="s2"&gt;&amp;quot;linkquality&amp;quot;&lt;/span&gt;:120&lt;span class="o"&gt;}&lt;/span&gt;
&lt;span class="o"&gt;{&lt;/span&gt;&lt;span class="s2"&gt;&amp;quot;battery&amp;quot;&lt;/span&gt;:17,&lt;span class="s2"&gt;&amp;quot;voltage&amp;quot;&lt;/span&gt;:2925,&lt;span class="s2"&gt;&amp;quot;linkquality&amp;quot;&lt;/span&gt;:141,&lt;span class="s2"&gt;&amp;quot;action&amp;quot;&lt;/span&gt;:&lt;span class="s2"&gt;&amp;quot;wakeu&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;zigbee2mqtt supports the following events for the aqara cube: shake, wakeup, fall, tap, slide, flip180, flip90, rotate_left and rotate_right.
Every event has additional information, such as the sides involved, or the degrees turned.&lt;/p&gt;
&lt;p&gt;Now you are ready to set up home assistant support in zigbee2mqtt following &lt;a class="reference external" href="https://koenkk.github.io/zigbee2mqtt/integration/home_assistant.html"&gt;this guide&lt;/a&gt;.&lt;/p&gt;
</content><category term="mqtt"></category><category term="iot"></category><category term="zigbee"></category></entry><entry><title>HDMI-VGA adapter issues with Raspberry Pi</title><link href="http://balkian.com/hdmi-vga-adapter-issues-with-raspberry-pi.html" rel="alternate"></link><published>2017-01-07T18:00:00+01:00</published><updated>2017-01-07T18:00:00+01:00</updated><author><name>J. Fernando Sánchez</name></author><id>tag:balkian.com,2017-01-07:/hdmi-vga-adapter-issues-with-raspberry-pi.html</id><summary type="html">&lt;p&gt;Avoid HDMI flickering/intermittent blanking on RPI with a 1400x1050 VGA monitor.&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2
3
4
5&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="n"&gt;hdmi_drive&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="mi"&gt;2&lt;/span&gt;
&lt;span class="n"&gt;hdmi_group&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="mi"&gt;2&lt;/span&gt;
&lt;span class="n"&gt;hdmi_mode&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="mi"&gt;42&lt;/span&gt;
&lt;span class="n"&gt;disable_overscan&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;
&lt;span class="n"&gt;config_hdmi_boost&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="mi"&gt;7&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary><content type="html">&lt;p&gt;Avoid HDMI flickering/intermittent blanking on RPI with a 1400x1050 VGA monitor.&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2
3
4
5&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="n"&gt;hdmi_drive&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="mi"&gt;2&lt;/span&gt;
&lt;span class="n"&gt;hdmi_group&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="mi"&gt;2&lt;/span&gt;
&lt;span class="n"&gt;hdmi_mode&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="mi"&gt;42&lt;/span&gt;
&lt;span class="n"&gt;disable_overscan&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;
&lt;span class="n"&gt;config_hdmi_boost&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="mi"&gt;7&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</content><category term="rpi"></category></entry><entry><title>PPTP connections</title><link href="http://balkian.com/pptp-connections.html" rel="alternate"></link><published>2017-01-01T00:00:00+01:00</published><updated>2017-01-01T00:00:00+01:00</updated><author><name>J. Fernando Sánchez</name></author><id>tag:balkian.com,2017-01-01:/pptp-connections.html</id><summary type="html">&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;opkg install kmod-nf-nathelper-extra
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary><content type="html">&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;opkg install kmod-nf-nathelper-extra
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</content><category term="openwrt"></category><category term="linux"></category><category term="router"></category></entry><entry><title>Progress bars in python</title><link href="http://balkian.com/progress-bars-in-python.html" rel="alternate"></link><published>2016-09-28T18:47:00+02:00</published><updated>2016-09-28T18:47:00+02:00</updated><author><name>J. Fernando Sánchez</name></author><id>tag:balkian.com,2016-09-28:/progress-bars-in-python.html</id><summary type="html">&lt;p&gt;&lt;a class="reference external" href="https://github.com/noamraph/tqdm"&gt;tqdm&lt;/a&gt; is a nice way to add progress bars in the command line or in a jupyter notebook.&lt;/p&gt;
&lt;img alt="" src="https://camo.githubusercontent.com/48838faaa8d00ea297f18e5bf55d3c6bb4e0ba6b/68747470733a2f2f692e696d6775722e636f6d2f686539417735432e676966" /&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2
3
4
5&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="kn"&gt;from&lt;/span&gt; &lt;span class="nn"&gt;tqdm&lt;/span&gt; &lt;span class="kn"&gt;import&lt;/span&gt; &lt;span class="n"&gt;tqdm&lt;/span&gt;
&lt;span class="kn"&gt;import&lt;/span&gt; &lt;span class="nn"&gt;time&lt;/span&gt;
&lt;span class="k"&gt;for&lt;/span&gt; &lt;span class="n"&gt;i&lt;/span&gt; &lt;span class="ow"&gt;in&lt;/span&gt; &lt;span class="n"&gt;tqdm&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nb"&gt;range&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="mi"&gt;100&lt;/span&gt;&lt;span class="p"&gt;)):&lt;/span&gt;
&lt;span class="n"&gt;time&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;sleep&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary><content type="html">&lt;p&gt;&lt;a class="reference external" href="https://github.com/noamraph/tqdm"&gt;tqdm&lt;/a&gt; is a nice way to add progress bars in the command line or in a jupyter notebook.&lt;/p&gt;
&lt;img alt="" src="https://camo.githubusercontent.com/48838faaa8d00ea297f18e5bf55d3c6bb4e0ba6b/68747470733a2f2f692e696d6775722e636f6d2f686539417735432e676966" /&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2
3
4
5&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="kn"&gt;from&lt;/span&gt; &lt;span class="nn"&gt;tqdm&lt;/span&gt; &lt;span class="kn"&gt;import&lt;/span&gt; &lt;span class="n"&gt;tqdm&lt;/span&gt;
&lt;span class="kn"&gt;import&lt;/span&gt; &lt;span class="nn"&gt;time&lt;/span&gt;
&lt;span class="k"&gt;for&lt;/span&gt; &lt;span class="n"&gt;i&lt;/span&gt; &lt;span class="ow"&gt;in&lt;/span&gt; &lt;span class="n"&gt;tqdm&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nb"&gt;range&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="mi"&gt;100&lt;/span&gt;&lt;span class="p"&gt;)):&lt;/span&gt;
&lt;span class="n"&gt;time&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;sleep&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="mi"&gt;1&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</content><category term="python"></category></entry><entry><title>Arch Linux Fixes</title><link href="http://balkian.com/arch-linux-fixes.html" rel="alternate"></link><published>2016-02-03T20:00:00+01:00</published><updated>2016-02-03T20:00:00+01:00</updated><author><name>J. Fernando Sánchez</name></author><id>tag:balkian.com,2016-02-03:/arch-linux-fixes.html</id><summary type="html">&lt;div class="section" id="black-screen-and-lightdm-doesn-t-unlock"&gt;
&lt;h2&gt;Black screen and LightDM doesn't unlock&lt;/h2&gt;
&lt;p&gt;Add this to your &lt;cite&gt;/etc/lightdm/lightdm.conf&lt;/cite&gt; file:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="k"&gt;[LightDM]&lt;/span&gt;
&lt;span class="na"&gt;logind-check-graphical&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="s"&gt;true&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;
</summary><content type="html">&lt;div class="section" id="black-screen-and-lightdm-doesn-t-unlock"&gt;
&lt;h2&gt;Black screen and LightDM doesn't unlock&lt;/h2&gt;
&lt;p&gt;Add this to your &lt;cite&gt;/etc/lightdm/lightdm.conf&lt;/cite&gt; file:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="k"&gt;[LightDM]&lt;/span&gt;
&lt;span class="na"&gt;logind-check-graphical&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="s"&gt;true&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;
</content><category term="arch"></category><category term="linux"></category></entry><entry><title>Org-mode tricks</title><link href="http://balkian.com/org-mode-tricks.html" rel="alternate"></link><published>2015-12-10T11:34:00+01:00</published><updated>2015-12-10T11:34:00+01:00</updated><author><name>J. Fernando Sánchez</name></author><id>tag:balkian.com,2015-12-10:/org-mode-tricks.html</id><summary type="html">&lt;div class="section" id="show-plain-text-version"&gt;
&lt;h2&gt;Show plain text version&lt;/h2&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nv"&gt;font-lock-mode&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;
</summary><content type="html">&lt;div class="section" id="show-plain-text-version"&gt;
&lt;h2&gt;Show plain text version&lt;/h2&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nv"&gt;font-lock-mode&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;
</content><category term="emacs"></category><category term="productivity"></category><category term="editor"></category><category term="org"></category></entry><entry><title>Sharing dotfiles</title><link href="http://balkian.com/sharing-dotfiles.html" rel="alternate"></link><published>2015-04-10T17:47:00+02:00</published><updated>2015-04-10T17:47:00+02:00</updated><author><name>J. Fernando Sánchez</name></author><id>tag:balkian.com,2015-04-10:/sharing-dotfiles.html</id><summary type="html">&lt;p&gt;Today's post is half a quick note, half public shaming. In other words, it is a reminder to be very careful with OAuth tokens and passwords.&lt;/p&gt;
&lt;p&gt;As part of moving to emacs, I starting using the incredibly useful &lt;a class="reference external" href="https://github.com/defunkt/gist.el"&gt;gh.el&lt;/a&gt;.
When you first use it, the extension saves either your …&lt;/p&gt;</summary><content type="html">&lt;p&gt;Today's post is half a quick note, half public shaming. In other words, it is a reminder to be very careful with OAuth tokens and passwords.&lt;/p&gt;
&lt;p&gt;As part of moving to emacs, I starting using the incredibly useful &lt;a class="reference external" href="https://github.com/defunkt/gist.el"&gt;gh.el&lt;/a&gt;.
When you first use it, the extension saves either your password or an OAuth token in your .gitconfig file.
This is cool and convenient, unless you &lt;a class="reference external" href="https://github.com/balkian/dotfiles"&gt;happen to be publishing your .gitconfig file in a public repo&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;So, how can you still share your gitconfig without sharing your password/token with the rest of the world?
Since Git 1.7.0, you can &lt;a class="reference external" href="http://stackoverflow.com/questions/1557183/is-it-possible-to-include-a-file-in-your-gitconfig"&gt;include other files in your gitconfig&lt;/a&gt;.&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;[include]
path = ~/.gitconfig_secret
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;And now, in your .gitconfig_secret file, you just have to add this:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2
3&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;[github]
user = balkian
token = &amp;quot;&amp;lt; Your secret token &amp;gt;&amp;quot;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</content><category term="github"></category><category term="git"></category><category term="dotfiles"></category></entry><entry><title>Zotero</title><link href="http://balkian.com/zotero.html" rel="alternate"></link><published>2014-12-09T12:12:12+01:00</published><updated>2014-12-09T12:12:12+01:00</updated><author><name>J. Fernando Sánchez</name></author><id>tag:balkian.com,2014-12-09:/zotero.html</id><summary type="html">&lt;p&gt;&lt;a class="reference external" href="https://www.zotero.org/"&gt;Zotero&lt;/a&gt; is an Open Source tool that lets
you organise your bibliography, syncing it with the cloud. Unlike other
alternatives such as &lt;a class="reference external" href="http://www.mendeley.com"&gt;Mendeley&lt;/a&gt;, Zotero can
upload the attachments and data to a private cloud via WebDav.&lt;/p&gt;
&lt;p&gt;If you use nginx as your web server, know that even though it provides …&lt;/p&gt;</summary><content type="html">&lt;p&gt;&lt;a class="reference external" href="https://www.zotero.org/"&gt;Zotero&lt;/a&gt; is an Open Source tool that lets
you organise your bibliography, syncing it with the cloud. Unlike other
alternatives such as &lt;a class="reference external" href="http://www.mendeley.com"&gt;Mendeley&lt;/a&gt;, Zotero can
upload the attachments and data to a private cloud via WebDav.&lt;/p&gt;
&lt;p&gt;If you use nginx as your web server, know that even though it provides
partial support for webdav, Zotero needs more than that. Hence, you will
need another webdav server, and optionally let nginx proxy to it. This
short post provides the basics to get that set-up working under
Debian/Ubuntu.&lt;/p&gt;
&lt;div class="section" id="setting-up-apache"&gt;
&lt;h2&gt;Setting up Apache&lt;/h2&gt;
&lt;p&gt;First we need to install Apache:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;sudo apt-get install apache2
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;Change the head of &amp;quot;/etc/apache2/sites-enabled/000-default&amp;quot; to:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="nt"&gt;&amp;lt;VirtualHost&lt;/span&gt; &lt;span class="s"&gt;*:880&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;Then, create a file /etc/apache2/sites-available/webdav:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt; 1
2
3
4
5
6
7
8
9
10
11
12
13&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="nb"&gt;Alias&lt;/span&gt; &lt;span class="sx"&gt;/dav&lt;/span&gt; &lt;span class="sx"&gt;/home/webdav/dav&lt;/span&gt;
&lt;span class="nt"&gt;&amp;lt;Location&lt;/span&gt; &lt;span class="s"&gt;/dav&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;
&lt;span class="nb"&gt;Dav&lt;/span&gt; &lt;span class="k"&gt;on&lt;/span&gt;
&lt;span class="nb"&gt;Order&lt;/span&gt; Allow,Deny
&lt;span class="nb"&gt;Allow&lt;/span&gt; from &lt;span class="k"&gt;all&lt;/span&gt;
&lt;span class="nb"&gt;Dav&lt;/span&gt; &lt;span class="k"&gt;On&lt;/span&gt;
&lt;span class="nb"&gt;Options&lt;/span&gt; +Indexes
&lt;span class="nb"&gt;AuthType&lt;/span&gt; Basic
&lt;span class="nb"&gt;AuthName&lt;/span&gt; DAV
&lt;span class="nb"&gt;AuthBasicProvider&lt;/span&gt; file
&lt;span class="nb"&gt;AuthUserFile&lt;/span&gt; &lt;span class="sx"&gt;/home/webdav/.htpasswd&lt;/span&gt;
&lt;span class="nb"&gt;Require&lt;/span&gt; valid-user
&lt;span class="nt"&gt;&amp;lt;/Location&amp;gt;&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;Ideally, you want your webdav folders to be private, adding
authentication to them. So you need to create the webdav and zotero
users and add the passwords to an htpasswd file. Even though you could
use a single user, since you will be configuring several clients with
your credentials I encourage you to create the zotero user as well. This
way you can always change the password for zotero without affecting any
other application using webdav.&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2
3
4&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;sudo adduser webdav
sudo htpasswd -c /home/webdav/.htpasswd webdav
sudo htpasswd /home/webdav/.htpasswd zotero
sudo mkdir -p /home/webdav/dav/zotero
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;Enable the site and restart apache:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2
3
4&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;sudo a2enmod webdav
sudo a2enmod dav_fs
sudo a2ensite webdav
sudo service apache2 restart
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;At this point everything should be working at
&lt;a class="reference external" href="http:/"&gt;http:/&lt;/a&gt;/&amp;lt;your_host&amp;gt;:880/dav/zotero&lt;/p&gt;
&lt;/div&gt;
&lt;div class="section" id="setting-up-nginx"&gt;
&lt;h2&gt;Setting up NGINX&lt;/h2&gt;
&lt;p&gt;After the Apache side is working, we can use nginx as a proxy to get
cleaner URIs. In your desired site/location, add this:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2
3
4
5
6
7&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="k"&gt;location&lt;/span&gt; &lt;span class="s"&gt;/dav&lt;/span&gt; &lt;span class="p"&gt;{&lt;/span&gt;
&lt;span class="kn"&gt;client_max_body_size&lt;/span&gt; &lt;span class="s"&gt;20M&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
&lt;span class="kn"&gt;proxy_set_header&lt;/span&gt; &lt;span class="s"&gt;X-Real-IP&lt;/span&gt; &lt;span class="nv"&gt;$remote_addr&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
&lt;span class="kn"&gt;proxy_set_header&lt;/span&gt; &lt;span class="s"&gt;X-Forwarded-For&lt;/span&gt; &lt;span class="nv"&gt;$remote_addr&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
&lt;span class="kn"&gt;proxy_set_header&lt;/span&gt; &lt;span class="s"&gt;Host&lt;/span&gt; &lt;span class="nv"&gt;$host&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
&lt;span class="kn"&gt;proxy_pass&lt;/span&gt; &lt;span class="s"&gt;http://127.0.0.1:880&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
&lt;span class="p"&gt;}&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;Now just reload nginx:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;sudo service nginx force-reload
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;
&lt;div class="section" id="extras"&gt;
&lt;h2&gt;Extras&lt;/h2&gt;
&lt;ul class="simple"&gt;
&lt;li&gt;&lt;a class="reference external" href="http://zoteroreader.com/"&gt;Zotero Reader&lt;/a&gt; - HTML5 client&lt;/li&gt;
&lt;li&gt;&lt;a class="reference external" href="https://github.com/ajlyon/zandy"&gt;Zandy&lt;/a&gt; - Android Open Source
client&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;
</content><category term="zotero"></category><category term="webdav"></category><category term="nginx"></category><category term="apache"></category></entry><entry><title>Proxies with Apache and python</title><link href="http://balkian.com/proxies-with-apache-and-python.html" rel="alternate"></link><published>2014-10-09T10:00:00+02:00</published><updated>2014-10-09T10:00:00+02:00</updated><author><name>J. Fernando Sánchez</name></author><id>tag:balkian.com,2014-10-09:/proxies-with-apache-and-python.html</id><summary type="html">&lt;p&gt;This is a quick note on proxying a local python application (e.g. flask)
to a subdirectory in Apache. This assumes that the file wsgi.py contains
a WSGI application with the name &lt;em&gt;application&lt;/em&gt;. Hence, wsgi:application.&lt;/p&gt;
&lt;div class="section" id="gunicorn"&gt;
&lt;h2&gt;Gunicorn&lt;/h2&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2
3
4
5&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="nt"&gt;&amp;lt;Location&lt;/span&gt; &lt;span class="s"&gt;/myapp/&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;
&lt;span class="nb"&gt;ProxyPass&lt;/span&gt; http://127.0.0 …&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</summary><content type="html">&lt;p&gt;This is a quick note on proxying a local python application (e.g. flask)
to a subdirectory in Apache. This assumes that the file wsgi.py contains
a WSGI application with the name &lt;em&gt;application&lt;/em&gt;. Hence, wsgi:application.&lt;/p&gt;
&lt;div class="section" id="gunicorn"&gt;
&lt;h2&gt;Gunicorn&lt;/h2&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2
3
4
5&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="nt"&gt;&amp;lt;Location&lt;/span&gt; &lt;span class="s"&gt;/myapp/&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;
&lt;span class="nb"&gt;ProxyPass&lt;/span&gt; http://127.0.0.1:8888/myapp/
&lt;span class="nb"&gt;ProxyPassReverse&lt;/span&gt; http://127.0.0.1:8888/myapp/
&lt;span class="nb"&gt;RequestHeader&lt;/span&gt; set SCRIPT_NAME &lt;span class="s2"&gt;&amp;quot;/myapp/&amp;quot;&lt;/span&gt;
&lt;span class="nt"&gt;&amp;lt;/Location&amp;gt;&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;&lt;strong&gt;Important&lt;/strong&gt;: &lt;em&gt;SCRIPT_NAME&lt;/em&gt; and the end of &lt;em&gt;ProxyPass&lt;/em&gt; URL &lt;strong&gt;MUST BE
THE SAME&lt;/strong&gt;. Otherwise, Gunicorn will fail miserably.&lt;/p&gt;
&lt;p&gt;Try it with:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;venv/bin/gunicorn -w &lt;span class="m"&gt;4&lt;/span&gt; -b &lt;span class="m"&gt;127&lt;/span&gt;.0.0.1:8888 --log-file - --access-logfile - wsgi:application
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;
&lt;div class="section" id="uwsgi"&gt;
&lt;h2&gt;UWSGI&lt;/h2&gt;
&lt;p&gt;This is a very simple configuration. I will try to upload one with more
options for uwsgi (in a .ini file).&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2
3
4&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="nt"&gt;&amp;lt;Location&lt;/span&gt; &lt;span class="s"&gt;/myapp/&lt;/span&gt;&lt;span class="nt"&gt;&amp;gt;&lt;/span&gt;
&lt;span class="nb"&gt;SetHandler&lt;/span&gt; uwsgi_handler
&lt;span class="nb"&gt;uWSGISocker&lt;/span&gt; &lt;span class="m"&gt;127.0.0.1&lt;/span&gt;:8888
&lt;span class="nt"&gt;&amp;lt;/Location&amp;gt;&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;Try it with:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;uwsgi --socket &lt;span class="m"&gt;127&lt;/span&gt;.0.0.1:8888 -w wsgi:application
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;div class="section" id="extra-supervisor"&gt;
&lt;h3&gt;Extra: Supervisor&lt;/h3&gt;
&lt;p&gt;If everything went as expected, you can wrap your command in a
supervisor config file and let it handle the server for you.&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt; 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="k"&gt;[unix_http_server]&lt;/span&gt;
&lt;span class="na"&gt;file&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="s"&gt;/tmp/myapp.sock ; path to your socket file&lt;/span&gt;
&lt;span class="k"&gt;[supervisord]&lt;/span&gt;
&lt;span class="na"&gt;logfile&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s"&gt;%(here)s/logs/supervisor.log&lt;/span&gt;
&lt;span class="na"&gt;childlogdir&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s"&gt;%(here)s/logs/&lt;/span&gt;
&lt;span class="k"&gt;[rpcinterface:supervisor]&lt;/span&gt;
&lt;span class="na"&gt;supervisor.rpcinterface_factory&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s"&gt;supervisor.rpcinterface:make_main_rpcinterface&lt;/span&gt;
&lt;span class="k"&gt;[supervisorctl]&lt;/span&gt;
&lt;span class="na"&gt;logfile&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s"&gt;%(here)s/logs/supervisorctl.log&lt;/span&gt;
&lt;span class="na"&gt;serverurl&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="s"&gt;unix:///tmp/supervisor.sock ; use a unix:// URL for a unix socket&lt;/span&gt;
&lt;span class="k"&gt;[program:myapp]&lt;/span&gt;
&lt;span class="na"&gt;command&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s"&gt;venv/bin/gunicorn -w 4 -b 0.0.0.0:5000 --log-file %(here)s/logs/gunicorn.log --access-logfile - wsgi:application&lt;/span&gt;
&lt;span class="na"&gt;directory&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s"&gt;%(here)s&lt;/span&gt;
&lt;span class="na"&gt;environment&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s"&gt;PATH=%(here)s/venv/bin/&lt;/span&gt;
&lt;span class="na"&gt;logfile&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s"&gt;%(here)s/logs/myapp.log&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;
&lt;/div&gt;
</content><category term="python"></category><category term="apache"></category><category term="proxy"></category><category term="gunicorn"></category><category term="uwsgi"></category></entry><entry><title>Publishing on PyPi</title><link href="http://balkian.com/publishing-on-pypi.html" rel="alternate"></link><published>2014-09-27T10:00:00+02:00</published><updated>2014-09-27T10:00:00+02:00</updated><author><name>J. Fernando Sánchez</name></author><id>tag:balkian.com,2014-09-27:/publishing-on-pypi.html</id><summary type="html">&lt;p&gt;Developing a python module and publishing it on Github is cool, but most
of the times you want others to download and use it easily. That is the
role of PyPi, the python package repository. In this post I show you how
to publish your package in less than 10 …&lt;/p&gt;</summary><content type="html">&lt;p&gt;Developing a python module and publishing it on Github is cool, but most
of the times you want others to download and use it easily. That is the
role of PyPi, the python package repository. In this post I show you how
to publish your package in less than 10 minutes.&lt;/p&gt;
&lt;div class="section" id="choose-a-fancy-name"&gt;
&lt;h2&gt;Choose a fancy name&lt;/h2&gt;
&lt;p&gt;If you haven't done so yet, take a minute or two to think about this. To
publish on PyPi you need a name for your package that isn't taken.
What's more, a catchy and unique name will help people remember your
module and feel more inclined to at least try it.&lt;/p&gt;
&lt;p&gt;The package name should hint what your module does, but that's not
always the case. That's your call. I personally put uniqueness and
memorability over describing the functionality.&lt;/p&gt;
&lt;/div&gt;
&lt;div class="section" id="create-a-pypirc-configuration-file"&gt;
&lt;h2&gt;Create a .pypirc configuration file&lt;/h2&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt; 1
2
3
4
5
6
7
8
9
10
11
12
13&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="na"&gt;[distutils] # this tells distutils what package indexes you can push to&lt;/span&gt;
&lt;span class="na"&gt;index-servers&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="s"&gt;&lt;/span&gt;
&lt;span class="s"&gt; pypi # the live PyPI&lt;/span&gt;
&lt;span class="s"&gt; pypitest # test PyPI&lt;/span&gt;
&lt;span class="na"&gt;[pypi] # authentication details for live PyPI&lt;/span&gt;
&lt;span class="na"&gt;repository&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s"&gt;https://pypi.python.org/pypi&lt;/span&gt;
&lt;span class="na"&gt;username&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s"&gt;{ your_username }&lt;/span&gt;
&lt;span class="na"&gt;password&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s"&gt;{ your_password } # not necessary&lt;/span&gt;
&lt;span class="na"&gt;[pypitest] # authentication details for test PyPI&lt;/span&gt;
&lt;span class="na"&gt;repository&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s"&gt;https://testpypi.python.org/pypi&lt;/span&gt;
&lt;span class="na"&gt;username&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s"&gt;{ your_username }&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;As you can see, you need to register both in the &lt;a class="reference external" href="https://pypi.python.org/pypi?%3Aaction=register_form"&gt;main pypi
repository&lt;/a&gt; and
the &lt;a class="reference external" href="https://testpypi.python.org/pypi?%3Aaction=register_form"&gt;testing
server&lt;/a&gt;.
The usernames and passwords might be different, that is up to you!&lt;/p&gt;
&lt;/div&gt;
&lt;div class="section" id="prepare-your-package"&gt;
&lt;h2&gt;Prepare your package&lt;/h2&gt;
&lt;p&gt;This should be the structure:&lt;/p&gt;
&lt;pre class="literal-block"&gt;
root-dir/ # Any name you want
setup.py
setup.cfg
LICENSE.txt
README.md
mypackage/
__init__.py
foo.py
bar.py
baz.py
&lt;/pre&gt;
&lt;div class="section" id="setup-cfg"&gt;
&lt;h3&gt;setup.cfg&lt;/h3&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="k"&gt;[metadata]&lt;/span&gt;
&lt;span class="na"&gt;description-file&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s"&gt;README.md&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;The markdown README is the &lt;em&gt;de facto&lt;/em&gt; standard in Github, but you can
also use rST (reStructuredText), the standard in the python community.&lt;/p&gt;
&lt;/div&gt;
&lt;div class="section" id="setup-py"&gt;
&lt;h3&gt;setup.py&lt;/h3&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt; 1
2
3
4
5
6
7
8
9
10
11
12&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="kn"&gt;from&lt;/span&gt; &lt;span class="nn"&gt;distutils.core&lt;/span&gt; &lt;span class="kn"&gt;import&lt;/span&gt; &lt;span class="n"&gt;setup&lt;/span&gt;
&lt;span class="n"&gt;setup&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;name&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s1"&gt;&amp;#39;mypackage&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
&lt;span class="n"&gt;packages&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="p"&gt;[&lt;/span&gt;&lt;span class="s1"&gt;&amp;#39;mypackage&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;],&lt;/span&gt; &lt;span class="c1"&gt;# this must be the same as the name above&lt;/span&gt;
&lt;span class="n"&gt;version&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s1"&gt;&amp;#39;{ version }&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
&lt;span class="n"&gt;description&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s1"&gt;&amp;#39;{ description }&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
&lt;span class="n"&gt;author&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s1"&gt;&amp;#39;{ name }&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
&lt;span class="n"&gt;email&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s1"&gt;&amp;#39;{ email }&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
&lt;span class="n"&gt;url&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s1"&gt;&amp;#39;https://github.com/{user}/{package}&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="c1"&gt;# URL to the github repo&lt;/span&gt;
&lt;span class="n"&gt;download&lt;/span&gt;\&lt;span class="n"&gt;_url&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s1"&gt;&amp;#39;https://github.com/{user}/{repo}/tarball/{version}&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt;
&lt;span class="n"&gt;keywords&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="p"&gt;[&lt;/span&gt;&lt;span class="s1"&gt;&amp;#39;websockets&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="s1"&gt;&amp;#39;display&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;,&lt;/span&gt; &lt;span class="s1"&gt;&amp;#39;d3&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;],&lt;/span&gt; &lt;span class="c1"&gt;# list of keywords that represent your package&lt;/span&gt;
&lt;span class="n"&gt;classifiers&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="p"&gt;[],&lt;/span&gt; &lt;span class="p"&gt;)&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;You might notice that the download_url points to a Github URL. We could
host our package anywhere, but Github is a convenient option. To create
the tarball and the zip packages, you only need to tag a tag in your
repository and push it to github:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;git tag &lt;span class="o"&gt;{&lt;/span&gt;version&lt;span class="o"&gt;}&lt;/span&gt; -m &lt;span class="s2"&gt;&amp;quot;{ Description of this tag/version}&amp;quot;&lt;/span&gt;
git push --tags origin master
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;div class="section" id="push-to-the-testing-main-pypi-server"&gt;
&lt;h2&gt;Push to the testing/main pypi server&lt;/h2&gt;
&lt;p&gt;It is advisable that you try your package on the test repository and fix
any problems first. The process is simple:
&lt;tt class="docutils literal"&gt;python setup.py register &lt;span class="pre"&gt;-r&lt;/span&gt; {pypitest/pypi} python setup.py sdist upload &lt;span class="pre"&gt;-r&lt;/span&gt; {pypitest/pypi}&lt;/tt&gt;&lt;/p&gt;
&lt;p&gt;If everything went as expected, you can now install your package through
pip and browse your package's page. For instance, check my senpy
package: &lt;a class="reference external" href="https://pypi.python.org/pypi/senpy"&gt;https://pypi.python.org/pypi/senpy&lt;/a&gt; &lt;tt class="docutils literal"&gt;pip install senpy&lt;/tt&gt;&lt;/p&gt;
&lt;/div&gt;
</content><category term="github"></category><category term="python"></category><category term="pypi"></category></entry><entry><title>Updating EuroLoveMap</title><link href="http://balkian.com/updating-eurolovemap.html" rel="alternate"></link><published>2014-03-27T14:00:00+01:00</published><updated>2014-03-27T14:00:00+01:00</updated><author><name>J. Fernando Sánchez</name></author><id>tag:balkian.com,2014-03-27:/updating-eurolovemap.html</id><summary type="html">&lt;p&gt;As part of the &lt;a class="reference external" href="http://www.opener-project.org/2013/07/18/opener-hackathon-in-amsterdam/"&gt;OpeNER
hackathon&lt;/a&gt;
we decided to build a prototype that would allow us to compare how
different countries feel about several topics. We used the OpeNER
pipeline to get the sentiment from a set of newspaper articles we
gathered from media in several languages. Then we aggregated …&lt;/p&gt;</summary><content type="html">&lt;p&gt;As part of the &lt;a class="reference external" href="http://www.opener-project.org/2013/07/18/opener-hackathon-in-amsterdam/"&gt;OpeNER
hackathon&lt;/a&gt;
we decided to build a prototype that would allow us to compare how
different countries feel about several topics. We used the OpeNER
pipeline to get the sentiment from a set of newspaper articles we
gathered from media in several languages. Then we aggregated those
articles by category and country (using the source of the article or the
language it was written in), obtaining the &amp;quot;overall feeling&amp;quot; of each
country about each topic. Then, we used some fancy JavaScript to make
sense out of the raw information.&lt;/p&gt;
&lt;p&gt;It didn't go too bad, it turns out &lt;a class="reference external" href="http://eurosentiment.eu/wp-content/uploads/2013/07/BOLv9qnCIAAJEek.jpg"&gt;we
won&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;Now, it was time for a face-lift. I used this opportunity to play with
new technologies and improve it:&lt;/p&gt;
&lt;ul class="simple"&gt;
&lt;li&gt;Using Flask, this time using python 3.3 and Bootstrap 3.0&lt;/li&gt;
&lt;li&gt;Cool HTML5+JS cards (thanks to
&lt;a class="reference external" href="http://pastetophone.com"&gt;pastetophone&lt;/a&gt;)&lt;/li&gt;
&lt;li&gt;Automatic generation of fake personal data to test the interface&lt;/li&gt;
&lt;li&gt;Obfuscation of personal emails&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;The result can be &lt;a class="reference external" href="http://eurolovemap.herokuapp.com/"&gt;seen here&lt;/a&gt;.&lt;/p&gt;
&lt;div class="section" id="publishing-a-python-3-app-on-heroku"&gt;
&lt;h2&gt;Publishing a Python 3 app on Heroku&lt;/h2&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;mkvirtualenv -p /usr/bin/python3.3 eurolovemap
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;Since Heroku uses python 2.7 by default, we have to tell it which
version we want, although it supports python 3.4 as well. I couldn't get
python 3.4 working using the
&lt;a class="reference external" href="https://launchpad.net/~fkrull/+archive/deadsnakes"&gt;deadsnakes&lt;/a&gt; ppa,
so I used python 3.3 instead, which works fine but is not officially
supported. Just create a file named &lt;em&gt;runtime.txt&lt;/em&gt; in your project root,
with the python version you want to use:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;python-3.3.1
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;Don't forget to freeze your dependencies so Heroku can install them:
&lt;tt class="docutils literal"&gt;bash pip freze &amp;gt; requirements.txt&lt;/tt&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;div class="section" id="publishing-personal-emails"&gt;
&lt;h2&gt;Publishing personal emails&lt;/h2&gt;
&lt;p&gt;There are really sophisticated and effective ways to obfuscate personal
emails so that spammers cannot easily grab yours. However, this time I
needed something really simple to hide our emails from the simplest form
of crawlers. Most of the team are in academia somehow, so in the end all
our emails are available in sites like Google Scholar. Anyway, nobody
likes getting spammed so I settled for a custom &lt;a class="reference external" href="http://en.wikipedia.org/wiki/Caesar_cipher"&gt;Caesar
cipher&lt;/a&gt;. Please, don't
use it for any serious application if you are concerned about being
spammed.&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="k"&gt;def&lt;/span&gt; &lt;span class="nf"&gt;blur_email&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;email&lt;/span&gt;&lt;span class="p"&gt;):&lt;/span&gt;
&lt;span class="k"&gt;return&lt;/span&gt; &lt;span class="s2"&gt;&amp;quot;&amp;quot;&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;join&lt;/span&gt;&lt;span class="p"&gt;([&lt;/span&gt;&lt;span class="nb"&gt;chr&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nb"&gt;ord&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;i&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;&lt;span class="o"&gt;+&lt;/span&gt;&lt;span class="mi"&gt;5&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt; &lt;span class="k"&gt;for&lt;/span&gt; &lt;span class="n"&gt;i&lt;/span&gt; &lt;span class="ow"&gt;in&lt;/span&gt; &lt;span class="n"&gt;email&lt;/span&gt;&lt;span class="p"&gt;])&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;And this is the client side:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt; 1
2
3
4
5
6
7
8
9
10
11
12&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;&lt;span class="nb"&gt;window&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;onload&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="kd"&gt;function&lt;/span&gt;&lt;span class="p"&gt;(){&lt;/span&gt;
&lt;span class="nx"&gt;elems&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nb"&gt;document&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;getElementsByClassName&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="s1"&gt;&amp;#39;profile-email&amp;#39;&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
&lt;span class="k"&gt;for&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;e&lt;/span&gt; &lt;span class="k"&gt;in&lt;/span&gt; &lt;span class="nx"&gt;elems&lt;/span&gt;&lt;span class="p"&gt;){&lt;/span&gt;
&lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;blur&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;elems&lt;/span&gt;&lt;span class="p"&gt;[&lt;/span&gt;&lt;span class="nx"&gt;e&lt;/span&gt;&lt;span class="p"&gt;].&lt;/span&gt;&lt;span class="nx"&gt;innerHTML&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
&lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;email&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="s2"&gt;&amp;quot;&amp;quot;&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
&lt;span class="k"&gt;for&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;s&lt;/span&gt; &lt;span class="k"&gt;in&lt;/span&gt; &lt;span class="nx"&gt;blur&lt;/span&gt;&lt;span class="p"&gt;){&lt;/span&gt;
&lt;span class="kd"&gt;var&lt;/span&gt; &lt;span class="nx"&gt;a&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;blur&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;charCodeAt&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;s&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
&lt;span class="nx"&gt;email&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;email&lt;/span&gt;&lt;span class="o"&gt;+&lt;/span&gt;&lt;span class="nb"&gt;String&lt;/span&gt;&lt;span class="p"&gt;.&lt;/span&gt;&lt;span class="nx"&gt;fromCharCode&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="nx"&gt;a&lt;/span&gt;&lt;span class="o"&gt;-&lt;/span&gt;&lt;span class="mi"&gt;5&lt;/span&gt;&lt;span class="p"&gt;);&lt;/span&gt;
&lt;span class="p"&gt;}&lt;/span&gt;
&lt;span class="nx"&gt;elems&lt;/span&gt;&lt;span class="p"&gt;[&lt;/span&gt;&lt;span class="nx"&gt;e&lt;/span&gt;&lt;span class="p"&gt;].&lt;/span&gt;&lt;span class="nx"&gt;innerHTML&lt;/span&gt; &lt;span class="o"&gt;=&lt;/span&gt; &lt;span class="nx"&gt;email&lt;/span&gt;&lt;span class="p"&gt;;&lt;/span&gt;
&lt;span class="p"&gt;}&lt;/span&gt;
&lt;span class="p"&gt;}&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;Unfortunately, this approach does not hide your email from anyone using
&lt;a class="reference external" href="http://phantomjs.org/"&gt;PhantomJS&lt;/a&gt;,
&lt;a class="reference external" href="http://zombie.labnotes.org/"&gt;ZombieJS&lt;/a&gt; or similar. For that, other
approaches like generating a picture with the address would be
necessary. Nevertheless, it is overkill for a really simple ad-hoc
application with custom formatting and just a bunch of emails that would
easily be grabbed manually.&lt;/p&gt;
&lt;/div&gt;
&lt;div class="section" id="generation-of-fake-data"&gt;
&lt;h2&gt;Generation of fake data&lt;/h2&gt;
&lt;p&gt;To test the contact section of the site, I wanted to populate it with
fake data. &lt;a class="reference external" href="https://github.com/joke2k/faker"&gt;Fake-Factory&lt;/a&gt; is an
amazing library that can generate fake data of almost any kind: emails,
association names, acronyms... It even lets you localise the results
(get Spanish names, for instance) and generate factories for certain
classes (à la Django).&lt;/p&gt;
&lt;p&gt;But I also wanted pictures, enter &lt;a class="reference external" href="http://lorempixel.com/"&gt;Lorem
Pixel&lt;/a&gt;. With its API you can generate
pictures of almost any size, for different topics (e.g. nightlife,
people) and with a custom text. You can even use an index, so it will
always show the same picture.&lt;/p&gt;
&lt;p&gt;For instance, the picture below is served through Lorem Pixel.&lt;/p&gt;
&lt;div class="figure"&gt;
&lt;img alt="This picture is generated with LoremIpsum" src="http://lorempixel.com/400/200/nightlife/" /&gt;
&lt;/div&gt;
&lt;p&gt;By the way, if you only want cat pictures, take a look at
&lt;a class="reference external" href="http://placekitten.com/"&gt;Placekitten&lt;/a&gt;. And for NSFW text, there's
the &lt;a class="reference external" href="http://slipsum.com/"&gt;Samuel L. Jackson Ipsum&lt;/a&gt;&lt;/p&gt;
&lt;/div&gt;
</content><category term="javascript"></category><category term="python"></category><category term="heroku"></category></entry><entry><title>Remove git files with globbing</title><link href="http://balkian.com/remove-git-files-with-globbing.html" rel="alternate"></link><published>2013-08-22T23:14:00+02:00</published><updated>2013-08-22T23:14:00+02:00</updated><author><name>J. Fernando Sánchez</name></author><id>tag:balkian.com,2013-08-22:/remove-git-files-with-globbing.html</id><summary type="html">&lt;p&gt;A simple trick. If you want to remove all the '.swp' files from a git
repository, just use:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;git rm --cached &lt;span class="s1"&gt;&amp;#39;\*\*.swp&amp;#39;&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary><content type="html">&lt;p&gt;A simple trick. If you want to remove all the '.swp' files from a git
repository, just use:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;git rm --cached &lt;span class="s1"&gt;&amp;#39;\*\*.swp&amp;#39;&lt;/span&gt;
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</content><category term="git"></category></entry><entry><title>Creating my web</title><link href="http://balkian.com/creating-my-web.html" rel="alternate"></link><published>2013-08-22T14:14:22+02:00</published><updated>2013-08-22T14:14:22+02:00</updated><author><name>J. Fernando Sánchez</name></author><id>tag:balkian.com,2013-08-22:/creating-my-web.html</id><summary type="html">&lt;p&gt;Finally, I've decided to set up a decent personal page. I have settled
for github-pages because I like the idea of keeping my site in a
repository and having someone else host and deploy it for me. The site
will be really simple, mostly static files. Thanks to Github,
&lt;a class="reference external" href="http://jekyllrb.com"&gt;Jekyll …&lt;/a&gt;&lt;/p&gt;</summary><content type="html">&lt;p&gt;Finally, I've decided to set up a decent personal page. I have settled
for github-pages because I like the idea of keeping my site in a
repository and having someone else host and deploy it for me. The site
will be really simple, mostly static files. Thanks to Github,
&lt;a class="reference external" href="http://jekyllrb.com"&gt;Jekyll&lt;/a&gt; will automatically generate static
pages for my posts every time I commit anything new to this repository.&lt;/p&gt;
&lt;p&gt;But Jekyll can be used independently, so if I ever choose to host the
site myself, I can do it quite easily. Another thing that I liked about
this approach is that the generated html files can be used in the
future, and I will not need Jekyll to serve it. Jekyll is really simple
and most of the things are written in plain html. That means that
everything could be easily reused if I ever choose to change to another
blogging framework (e.g. pelical). But, for the time being, I like the
fact that Github takes care of the compilation as well, so I can simply
modify or add files through the web interface should I need to.&lt;/p&gt;
&lt;p&gt;I hadn't played with HTML and CSS for a while now, so I also wanted to
use this site as a playground. At some point, I realised I was doing
mostly everything in plain HTML and CSS, and decided to keep it like
that for as long as possible. As of this writing, I haven't included any
Javascript code in the page. Probably I will use some to add my
&lt;a class="reference external" href="http://gist.github.com/balkian"&gt;gists&lt;/a&gt; and
&lt;a class="reference external" href="http://github.com/balkian"&gt;repositories&lt;/a&gt;, but we will see about
that.&lt;/p&gt;
&lt;p&gt;I think the code speaks for itself, so you can check out &lt;a class="reference external" href="http://github.com/balkian/balkian.github.com"&gt;my repository
on Github&lt;/a&gt;. You can
clone and deploy it easily like this:&lt;/p&gt;
&lt;table class="highlighttable"&gt;&lt;tr&gt;&lt;td class="linenos"&gt;&lt;div class="linenodiv"&gt;&lt;pre&gt;1
2
3&lt;/pre&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class="code"&gt;&lt;div class="highlight"&gt;&lt;pre&gt;&lt;span&gt;&lt;/span&gt;git clone
https://github.com/balkian/balkian.github.com &lt;span class="nb"&gt;cd&lt;/span&gt; balkian.github.com
jekyll serve -w
&lt;/pre&gt;&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;p&gt;I will keep updating this post with information about:&lt;/p&gt;
&lt;ul class="simple"&gt;
&lt;li&gt;Some Jekyll plugins that might be useful&lt;/li&gt;
&lt;li&gt;What CSS tricks I learnt&lt;/li&gt;
&lt;li&gt;The webfonts I used&lt;/li&gt;
&lt;li&gt;The badge on the left side of the page&lt;/li&gt;
&lt;/ul&gt;
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