Change the Prefix in tmux
From the tmux cheat sheet · Key Bindings · verified Aug 2026
Change the Prefix
Replace Ctrl-b while preserving prefix passthrough.
bash
unbind C-b
set -g prefix C-a
bind C-a send-prefix📌 Keep send-prefix for nested sessions
💡 prefix2 supports a transition period
⚠️ Ctrl-a conflicts with a common shell shortcut
🎯 Change the prefix only when it improves workflow
prefixkey-bindingsnested-tmux
Continue with tmux
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