My tmux config. Thanks to http://www.hamvocke.com/blog/a-guide-to-customizing-your-tmux-conf/

.tmux.conf

# shortcut to reload tmux configuration
bind r source-file ~/.tmux.conf
# set mouse capture on
set -g mouse on
# switch panes using Alt-arrow without prefix
bind -n M-Left select-pane -L
bind -n M-Right select-pane -R
bind -n M-Up select-pane -U
bind -n M-Down select-pane -D
# change the split window key command
bind | split-window -h
bind - split-window -v
unbind '"'
unbind %