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content/cheatsheet/linux.md

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+---
+title: Linux
+author: "Unknown Author"
+description: Tips and tricks for GNU/Linux and Unix
+tags:
+  - linux
+  - arch
+
+---
+
+# Black screen and LightDM doesn't unlock
+
+Add this to your /etc/lightdm/lightdm.conf file:
+
+```
+[LightDM]
+logind-check-graphical=true
+```
+
+
+# Edit previous commands
+
+`fc` 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 `C-x C-e`), it also allows you to edit and run several lines at the same time.
+You use it like this:
+
+List previous commands
+```
+$ fc -l
+10259  nvim deploy.sh
+10260* cd ..
+10261* nvim content/cheatsheet/linux.md
+10262  cd
+```
+
+List commands with date (in zsh)
+
+```
+$ fc -ld
+10260* 19:38  cd ..
+10261* 19:38  nvim content/cheatsheet/linux.md
+10262  19:40  cd
+10263  19:40  fc -l
+```
+
+You can add the date too:
+
+```
+$ 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
+```
+
+You can edit a range of commands
+
+```
+$ fc 10262 10264
+```
+
+
+The range can be relative to the current position, so the previous command is equivalent to:
+
+```
+$ fc -3 -1
+```
+
+If you save and exit, all commands are executed as a script, and it will be added to your history.
+
+Source: https://shapeshed.com/unix-fc/