Basic tmux config

.tmux.conf

# Set the prefix to Ctrl+a
set -g prefix C-a

# Remove the old prefix
unbind C-b

# Send Ctrl+a to applications by pressing it twice
bind C-a send-prefix

# use mouse and enable scrolling
set -g mouse

bind -n WheelUpPane if-shell -F -t = "#{mouse_any_flag}" "send-keys -M" "if -Ft= '#{pane_in_mode}' 'send-keys -M' 'copy-mode -e; send-keys -M'"

# scroll back buffer
set -g history-limit 100000