Some useful tmux options, like making it use ^a like screen does

.tmux.conf

start-server
set -g prefix C-a
unbind C-b
bind C-a send-prefix

set -g status-keys vi
setw -g mode-keys vi
set -g status off
unbind ^L
bind ^L refresh-client 

bind C-[ copy-mode
bind C-p previous-window
bind C-n next-window
unbind ^A
bind ^A last-window 

set-window-option -g aggressive-resize on

unbind d 
bind d detach-client

set -g default-terminal "screen-256color-bce"