tmux: A Terminal multiplexer

tmux: A Terminal multiplexer

tmux is a terminal multiplexer written in C. It enables a number of terminals to be created, accessed, and controlled from a single screen. It is similar to GNU Screen tool. A user can easily manage multiple tasks and command line programs on a Linux system, without having to open many Terminal windows. tmux may be detached from a screen and continue running in the background, then later reattached.

Install tmux

On Debian/Ubuntu:

sk@sk:~$ sudo apt-get install tmux


It will not be found in official repositories. So add EPEL repository to install tmux.

[root@server ~]# rpm -ivh

Now install tmux with the following command:

[root@server ~]# yum install tmux


To start tmux, simply enter the following command:

[root@server ~]# tmux

Now you will be placed in the new tmux session. The default prefix key stroke is “CTRL+B”. You will need to first press these key pairs for any other commands. For complete list of commands first press “CTRL+B” then press “?”. This command will list all possible key bindings.


Create new tmux session

To create a new tmux session press “CTRL+B” and then press “C”. You will be placed in the new session.

root@server:~_008The green bar in the bottom will show the number of opened tmux sessions. The * mark shows the current session.

To list all sessions and move between sessions press “CTRL+B” and “W” keys. Use the arrow keys to select the session you want to attach and press Enter. You will be attached to corresponding session. To exit from a session, simply type the command “exit”.

root@server:~_010Split session windows

To split the current window vertically, press “CTRL+B” and press “%” key.


Detach from session

To detach from a session, press “CTRL+B” and press “D”. You will be detached from all sessions and redirected to original terminal screen.

Resume session

To go back to sessions (resume), enter the following command:

[root@server ~]# tmux attach

Now you will be attached to original session where you came from. For more example about tmux command refer the man pages:

[root@server ~]# man tmux
  • Padhu

    tmux is great tool. We can start long running scripts from remote and detach. after certain time later we can attach and view the status. very useful tool for me…..

  • Krishnan Sriram

    What’s the advantage of this over multi-tab interface provided by terminal application in LINUX distributions from Ubuntu