We’ll show you how to install and configure tmux. In this post, we will write about tmux, which is a terminal multiplexer, a lot like GNU Screen but much more powerful. If you spend a lot of time in a CLI, then you’ll love tmux.
1. What is tmux?
According to the tmux authors:
tmux is a terminal multiplexer. What is a terminal multiplexer? It lets you switch easily between several programs in one terminal, detach them (they keep running in the background) and reattach them to a different terminal. And do a lot more.
2. tmux installation
sudo apt-get install tmux
yum install tmux
and on MacOS:
brew install tmux
After installation, to start tmux run
tmux in your terminal window.
3. tmux Configuration & Prefix key
The global configuration file is located at
/etc/tmux.conf and the user specific configuration file is located at
~/.tmux.conf. The default prefix is
Ctrl-b but if you want to change it to
Ctrl-a (GNU Screen’s default prefix), you need to add the following code to your ~/.tmux.conf file:
unbind C-b set -g prefix C-a bind C-a send-prefix
4. tmux Session Management
tmux is developed on a client-server model which means that the session is stored on the server and persist beyond ssh logout.
The following command will create a new session called mysession:
tmux new-session -s mysession
To attach to a session run:
tmux attach -t mysession
To list all session run:
You can kill a session using the following command:
tmux kill-session -t mysession
Frequently used sessions commands
Ctrl-b d Detach from the current session Ctrl-b ( Go to previous session Ctrl-b ) Go to next session Ctrl-b L Go to previously used session Ctrl-b s Choose a session from the sessions list
5. tmux Windows (tabs) Management
Each session can have multiple windows. By default all windows are numbered starting from zero.
Frequently used windows (tabs) commands
Ctrl-b 1 Switch to window 1 Ctrl-b c Create new window Ctrl-b w List all windows Ctrl-b n Go to next window Ctrl-b p Go to previous window Ctrl-b f Find window Ctrl-b , Name window Ctrl-b w Choose a window from the windows list Ctrl-b & Kill the current window
6. tmux Panes Management
With tmux, you can split windows into multiple panes.
Frequently used panes commands
Ctrl-b " Split the pane vertically (top/bottom) Ctrl-b % Split the pane horizontally (left/right) Ctrl-b q Show pane numbers Ctrl-b x Kill the current pane Ctrl-b + Break pane into window Ctrl-b - Restore pane from window Ctrl-b left Go to the next pane on the left Ctrl-b right Go to the next pane on the right Ctrl-b up Go to the next pane on the top Ctrl-b down Go to the next pane on the bottom Ctrl-b o Cycle through all panes Ctrl-b ; Go to previously used pane
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