tmux usage 101

Motivation: why you should use tmux?

tmux is very useful under the following scenarios:

  1. When you ssh to a server, you would like to open multiple shells but don't want to ssh for multiple times.
  2. When you want to leave your work on the server running without needing to keep your shell alive, and moreover, you want to resume working on it afterwards

And it's just cool when you can split the shells windows!

Basic Usage

All the commands for tmux are only available after you type the command prefix. By default it is Ctrl-b. After pressing this combination, it will activate the console mode (or so I believe).

Pane commands

CommandDescription
"Split current pane vertically, create new pane underneath
%Split current pane horizontally, create new pane on the right
xClose current pane (with confirmation, contrasst to simply pressing Ctrl-d)
zMaximize current pane (after v1.8)
!Move current pane to a new window and open it there
;Switch to the latest used pane
qShow pane number, and before the numbers disappear, you can switch to that pane by typing the number
{Swap forward current pane
}Swap backward current pane
Ctrl+oSwap all the panes in current window clockwise
arrowMove to the pane pointed by the arrow key (intuitive!)
oSwitch to the next (pane number order) pane
tShow a clock :)

Configure

Change command prefix

The default command prefix Ctrl-b is not a very good key binding: they are too far away! My choice is to change it to Ctrl-a, but it could be set to any keybinding you like.

We should use Ctrl-b and then type : to enter the command line mod and enter the following lines

set -g prefix C-a
unbind C-b
bind C-a send-prefix

My current favorite prefix is the grave accent (`), but this kinda hinders editing markdown in tmux.

If you would like to set it permanently, it is wise to create a ~/.tmux.conf, it functions just like your .bashrc and other dotfiles. If you

Since tmux 1.6, it is possible to set a second prefix by the following command:

set -g prefix2 <your-key-binding>

To apply changes, you need to source the configuration file:

tmux source-file ~/.tmux.conf