`Ctlr+B` activiates command entry (called the prefix)

panes
----------------------------------
% = split pane right
" = split pane below
<Up>/<Left> = switch panes
z = maximize/minimize pane
x = kill pane
Ctrl+B+<Arrow> = resize

windows
----------------------------------
c = create new window
w = create window selection prompt

sessions
----------------------------------
d = detach session
tmux ls = list sesions
tmux attach -t 0 = attach to session 0


colors
----------------------------------
setup a `.tmux.conf` file with this line `set -g default-terminal 'screen-256color'` 
point tmux to it with `tmux source-file ~/.tmux.conf`


fonts
----------------------------------
powerline fonts
https://github.com/vim-airline/vim-airline
https://github.com/powerline/fonts
sudo apt-get install fonts-powerline