Update cheatsheets

tldr/history

@@ -14,7 +14,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Display the last 20 commands (in Zsh it displays all commands starting from the 20th):
 
-`history {{20}}`
+`history 20`
 
 - Display history with timestamps in different formats (only available in Zsh):
 

tldr/linux/systemctl-restart

@@ -0,0 +1,18 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# systemctl restart
+
+> Stop and then start one or more systemd units.
+> Can be used in place of `systemctl start` on a stopped unit, but `start` is safer so that a running unit isn't accidentally restarted.
+> More information: <https://www.freedesktop.org/software/systemd/man/latest/systemctl.html#restart%20PATTERN%E2%80%A6>.
+
+- Restart a unit:
+
+`systemctl restart {{unit}}`
+
+- Restart more than one unit:
+
+`systemctl restart {{unit1 unit2 ...}}`

tldr/swaymsg

@@ -0,0 +1,30 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# swaymsg
+
+> Send messages to a running instance of Sway using IPC.
+> See <https://github.com/swaywm/sway/blob/master/sway/sway.5.scd> for available commands.
+> More information: <https://github.com/swaywm/sway/blob/master/swaymsg/swaymsg.1.scd>.
+
+- Run a Sway command:
+
+`swaymsg {{command}}`
+
+- Display a list of workspaces:
+
+`swaymsg {{[-t|--type]}} get_workspaces`
+
+- Display a list of input devices:
+
+`swaymsg {{[-t|--type]}} get_inputs`
+
+- Display a list of output devices:
+
+`swaymsg {{[-t|--type]}} get_outputs`
+
+- Display a layout tree of all open windows, containers, outputs, and workspaces:
+
+`swaymsg {{[-t|--type]}} get_tree`