My tmux configuration file (v1.8.4)

.tmux.conf

# Make Ctrl+x Control key
unbind C-b
set -g prefix C-x
bind-key C-x send-prefix

# Rename window with C-x-A
unbind C-,
bind-key A command-prompt 'rename-window %%'

# Resize panes easily with Alt/Option
unbind M-Up
unbind M-Left
unbind M-Right
unbind M-Down
bind-key -n -r M-Up resize-pane -U 5
bind-key -n -r M-Left resize-pane -L 5
bind-key -n -r M-Right resize-pane -R 5
bind-key -n -r M-Down resize-pane -D 5

# Renumber windows
set -g renumber-windows on
set -g default-terminal "screen-256color"

# Allow mouse pane & window usage (currently disabled)
#set -g mouse-utf8 on
#set -g mouse-resize-pane on
#set -g mouse-select-pane on
#set -g mouse-select-window on

# Default shell is bash
set -g default-shell '/bin/bash'

# No bell action by default
set -g bell-action none

# Statusbar properties
set -g status-utf8 on
set -g status-left-length 50
set -g display-time 3000
set -g status-bg blue
set -g status-fg black
set-window-option -g window-status-current-attr bright
set-window-option -g window-status-current-bg red
set-window-option -g window-status-current-fg white
set-option -g status-left ' #h |'
set-option -g status-right ' | %Y-%m-%d %H:%M #[default]'

# Quickly move around panes with Ctrl+left/right/up/down
unbind C-Up
unbind -n C-Up
bind -n -r C-Up select-pane -U
unbind C-Down
unbind -n C-Down
bind -n -r C-Down select-pane -D
unbind C-Left
unbind -n C-Left
bind -n -r C-Left select-pane -L
unbind C-Right
unbind -n C-Right
bind -n -r C-Right select-pane -R

# Quickly jump to windows using the Fn keys
unbind -n F1
bind -n F1 select-window -t 0
unbind -n F2
bind -n F2 select-window -t 1
unbind -n F3
bind -n F3 select-window -t 2
unbind -n F4
bind -n F4 select-window -t 3
unbind -n F5
bind -n F5 select-window -t 4
unbind -n F6
bind -n F6 select-window -t 4
unbind -n F7
bind -n F7 select-window -t 6
unbind -n F8
bind -n F8 select-window -t 7
unbind -n F9
bind -n C-F9 select-window -t 8
unbind -n C-F10
bind -n C-F10 select-window -t 9

# Use F11 and F12 to select the previous/next window
bind -n F11 select-window -p
bind -n F12 select-window -n

# Use F13 - F16 (Mac) keys to quickly selects layouts
bind -n S-F1 select-layout even-vertical
bind -n S-F2 select-layout even-horizontal
bind -n S-F3 select-layout tiled
bind -n S-F4 select-layout main-horizontal
bind -n S-F5 select-layout main-vertical

# Loading powerline (currently not in use)
#run-shell "powerline-daemon -q"
#source /usr/local/lib/python2.7/site-packages/powerline/bindings/tmux/powerline.conf
#source /usr/lib/python2.7/site-packages/powerline/bindings/tmux/powerline_tmux_1.8_plus.conf