My tmux configuration

.tmux.conf

# use ctrl-a as the prefix (instead of the default ctrl-b)
set-option -g prefix C-a

# pres ctrl-a, ctrl-a to flip between windows
bind-key C-a last-window

# use vi keybinding (basically just hjkl for navigation)
set-window-option -g mode-keys vi
bind-key -t vi-copy 'v' begin-selection
bind-key -t vi-copy 'y' copy-selection
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

# move x clipboard into tmux paste buffer
bind C-p run "tmux set-buffer \"$(xclip -o)\"; tmux paste-buffer"
# move tmux copy buffer into x clipboard
bind C-y run "tmux save-buffer - | xclip -i"

# start window and pane numbering at 1 instead of 0
set -g base-index 1
set-window-option -g pane-base-index 1