Change prefix to Ctrl-a

tmux

unbind C-b
set -g prefix C-a
bind C-a send-prefix

Explanation

A common customization for users migrating from GNU screen.

Learn the surrounding workflow

Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.

Same sheet · prioritizing Core configuration

Keep window numbers compact after closing windows.

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Use mouse selection and pane/window switching.

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Set windows and panes to begin at 1 instead of 0.

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Apply config changes without restarting tmux.

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Place the tmux status line above panes.

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Customize the left side of the status line.

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