Changing tmux Default Key Binding
Bt default, command key bindings are prefixed by
ctrl+b. For example, to vertically split a window type
After splitting a window into multiple panes, a pane can be resized by the hitting prefix key (e.g.
ctrl+b) and, while continuing to hold
left/right/up/down. Swapping panes is achived in the same manner, but by hitting
o instead of a directional key.
Key bindings may be changed with the bind and unbind commands in
tmux.conf. For example, the default prefix binding of
ctrl+b can be changed to
ctrl+a by adding the following commands in your configuration file:
unbind C-b set -g prefix C-a bind C-a send-prefix
Tip: Quote special characters to use them as prefix. You may also use
alt(called Meta) instead of
ctrl. For example:
set -g prefix m-'\'
Source: tmux - ArchWiki (Key bindings)