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Tmux a terminal multiplexer

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Tmux is a terminal multiplexer, it allows you to have multiple processes open in multiple window panes on your server.

All the window panes can be manged from one terminal. Servers don't have fancy multi tab terminals so yeah this is the answer.

The processes will run in the background on a tmux server. The process and windows will remain open and running even when you log out of your SSH session.

You can use it on your localhost machine as well to have multiple window panes running any process, like npm run watch, npm run start or what ever your heart desires.


Here I have four panes opens and I can move between each pane by pressing Ctrl+b then Up or Down, Left and Right.

The leader key is Ctrl plus 'b' and some "other key".



Do not use snap it's outdated, the latest version lives on apt.

sudo apt install tmux
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brew install tmux
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Using it

In the terminal enter:

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This will start a tmux server and session with one window pane.

For horizontal window split: Ctrl+b %

For vertical window split: Ctrl+b "

Move up: Ctrl+b Up

Move down: Ctrl+b Down

Move left: Ctrl+b Left

Move right: Ctrl+b Right

Resize window: Press and keep pressing Ctrl+b while tapping Up or Down repeatedly this will increase/decrease window size in which ever direction you have chosen.

List all the commands Ctrl+b then :


man 1 tmux
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Deep dive the docs here

That's it have fun with it.

Top comments (2)

pavelee profile image
Paweł Ciosek

tmux is great! I was using to monitor app load! 🚀

Thanks for the article! 🙏

mannuelf profile image

:-) thanks @pavelee