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<h2>Linux</h2>
<h1 id="black-screen-and-lightdm-doesn-t-unlock">Black screen and LightDM doesn&rsquo;t unlock</h1>
<p>Add this to your /etc/lightdm/lightdm.conf file:</p>
<pre><code>[LightDM]
logind-check-graphical=true
</code></pre>
<h1 id="edit-previous-commands">Edit previous commands</h1>
<p><code>fc</code> is a shell builtin to list and edit previous commands in an editor.
In addition to editing a single line (which you can also do with <code>C-x C-e</code>), it also allows you to edit and run several lines at the same time.
You use it like this:</p>
<p>List previous commands</p>
<pre><code>$ fc -l
10259 nvim deploy.sh
10260* cd ..
10261* nvim content/cheatsheet/linux.md
10262 cd
</code></pre>
<p>List commands with date (in zsh)</p>
<pre><code>$ fc -ld
10260* 19:38 cd ..
10261* 19:38 nvim content/cheatsheet/linux.md
10262 19:40 cd
10263 19:40 fc -l
</code></pre>
<p>You can add the date too:</p>
<pre><code>$ fc -fld
10262 1/10/2019 19:40 cd
10263 1/10/2019 19:40 fc -l
10264 1/10/2019 19:40 fc -ld
</code></pre>
<p>You can edit a range of commands</p>
<pre><code>$ fc 10262 10264
</code></pre>
<p>The range can be relative to the current position, so the previous command is equivalent to:</p>
<pre><code>$ fc -3 -1
</code></pre>
<p>If you save and exit, all commands are executed as a script, and it will be added to your history.</p>
<p>Source: <a href="https://shapeshed.com/unix-fc/">https://shapeshed.com/unix-fc/</a></p>
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<li><a href="#black-screen-and-lightdm-doesn-t-unlock">Black screen and LightDM doesn&rsquo;t unlock</a></li>
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