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Remap the ctrl+b tmux prefix to ctrl+a

December 20, 2020  ‐ 1 min read

When coming from GNU screen the ctrl+b tmux uses by default is somewhat hard to get used to. Besides that it isn't as nicely reachable as the ctrl+a prefix used by GNU screen.

Adjusting this prefix takes a couple lines of configuration in the ~/.tmux.conf config file. Following the example in the tmux man pages, we make the following addition in the tmux config.

# ~/.tmux.conf

unbind-key C-b

set-option -g prefix C-a

bind-key C-a send-prefix

Learn more

A great resource for learning more about tmux are its man pages. You can read them online here or from the command-line using the following command:

$ man tmux

Or take a look at this book: