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10th January 2014 | By:

Tmux usage tutorial

Linux users are probably aware of the utility called ‘screen’, it has been around for ages and is still available for most of the distributions as the default utility to multiplex a physical terminal between the processes. The ‘screen’ works quite well but lacks a constants development of new features.

Tmux is an alternative to screen with a precise goal in mind to be a lightweight and easy to use.

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Installing Tmux
If you are using Debian based operating system then a simple

apt-get install tmux

should be enough to get you a decent version of Tmux up and running. Most of the distributions already provide the tmux as a packaged solution, if your distribution does not provide it you can always grab a fresh copy of the source code here (http://tmux.sourceforge.net/).

Simple Tmux Usage
To start using Tmux, simply type

tmux

You will now see something like this:

tmux_running

We can start using this session straight away, lets type

top

You will now see something like this:

tmux_running_top

Detaching and Attaching to a session

Now let’s detach that session and attach it straight away.

CTRL + B then d
tmux list
tmux a

Panels
Tmux sessions can be divided into multiple panels, this is pretty neat feature allowing us to group different outputs of the programs. Let’s add another panel in order to execute another program/command.

To create a panel vertically

CTRL + B then %

tmux_running_vertical

To create a panel horizontally

CTRL + B then ";

tmux_running_horizontal

You can also have a combination of vertical and horizontal panels like this:

tmux_running_both

Navigating through the panels is very easy you can use the arrow keys to jump from one panel to another, the current panel will be always highlighted.

CTRL + B followed by LEFT / RIGHT / TOP / BOTTOM

To resize a panel you have to use the same combination as moving between panels with a slight difference of holding they trigger key like this:

CTRL + B [hold] followed by holding LEFT / RIGHT / TOP / BOTTOM

tmux_running_resize

Closing a panel can be accomplished simply by exiting the terminal

exit

tmux_running_exit

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