Add List Sessions as a tmux til

README.md

@@ -250,6 +250,7 @@ _305 TILs and counting..._
 - [Enabling Vi Mode](tmux/enabling-vi-mode.md)
 - [Jumping Between Sessions](tmux/jumping-between-sessions.md)
 - [List All Key Bindings](tmux/list-all-key-bindings.md)
+- [List Sessions](tmux/list-sessions.md)
 - [Organizing Windows](tmux/organizing-windows.md)
 - [Paging Up And Down](tmux/paging-up-and-down.md)
 - [Pane Killer](tmux/pane-killer.md)

tmux/list-sessions.md

@@ -0,0 +1,14 @@
+# List Sessions
+
+Not sure if `tmux` is running or, if it is, which sessions are available?
+You can list all the currently running sessions right from the command-line.
+
+```bash
+$ tmux ls
+```
+
+This command is shorthand for:
+
+```bash
+$ tmux list-sessions
+```