~/.tmux.conf for tmux 1.5 (e.g. for use on Cloud9 console.)

.tmux.conf

# This is a modified version that supports tmux 1.5 so you can use tmux on Cloud9 IDE.
# https://gist.github.com/chirayuk/6084618

# NOTE: The default TERM value under Cloud9 is set to vt100.  This won't give
#       you colors under tmux.  Before running tmux, "export
#       TERM=screen-256color" and then run tmux.  If you already ran tmux
#       before doing so, you can "tmux kill-server" to kill it and start a new
#       one.

#nop#  # https://gist.github.com/chirayuk/5377283
#nop#  set default-command /Users/chirayu/ck/vcs/ck5/scripts/for_os_x/tmux_shell_with_clipboard_support


# Change the prefix key to `
unbind C-b
set -g prefix `
# send the prefix to client inside window (ala nested sessions)
bind-key ` send-prefix

# Reload config
bind-key R source $HOME/.tmux.conf

# VI mode keybindings
set-window-option -g mode-keys vi
set-option -g status-keys vi

# Mouse bindings.
set-window-option -g mode-mouse on
set-option -g mouse-select-window on
set-option -g mouse-select-pane on
set-option -g mouse-resize-pane on

set-window-option -g utf8 on
# set-window-option -g automatic-rename off
set bell-action none

# Force 256 color - start tmux with "tmux -2"
set -g default-terminal "screen-256color"

# xterm-keys
set-window -g xterm-keys on


# status bar
# color 3 = yellow, color 11 = bright yellow
set-option -g status-bg magenta
set-option -g status-fg colour11
# set-option -g status-attr bold
set-option -g message-bg magenta
set-option -g message-fg colour11
# set-option -g message-attr bold
# set-option -g status-interval 5

# Highlighting the active window in status bar
set-window-option -g window-status-current-bg blue
set-window-option -g window-status-current-fg colour11
set-window-option -g window-status-current-attr bold

#nop#  set-window-option -g window-status-last-bg blue
#nop#  set-window-option -g window-status-last-fg yellow
#nop#  set-window-option -g window-status-last-attr dim
#nop#  
#nop#  # Custom(chirayu): Clipboard sync.
#nop#  bind-key y run-shell "ck copy_tmux_buffer"
#nop#  bind-key -t vi-copy Enter copy-pipe "ck copy_tmux_buffer"
#nop#  bind-key p run-shell "ck paste_to_tmux_buffer"
#nop#  
#nop#  # Zoom window.
#nop#  bind-key Enter resize-pane -Z

# key bindings for splitting
unbind %
bind-key | split-window -h
unbind '"'
bind-key - split-window -v

# key bindings for switching windows
unbind p
bind-key -r left previous-window
unbind n
bind-key -r right next-window

# key bindings for switching panes
bind-key -r Up select-pane -t.-1
bind-key -r Down select-pane -t.+1

# Goto window by number.
bind-key g command-prompt "select-window -t :'%%'"

# Send input to all panes
bind-key * set-window-option synchronize-panes

bind-key m set-window-option mode-mouse on \; set-option mouse-select-window on \; set-option mouse-select-pane on \; set-option mouse-resize-pane on
bind-key M set-window-option mode-mouse off \; set-option mouse-select-window off \; set-option mouse-select-pane off \; set-option mouse-resize-pane off

# Resize panes.
bind-key -r M-Left resize-pane -L 1
bind-key -r M-Right resize-pane -R 1
bind-key -r M-Up resize-pane -U 1
bind-key -r M-Down resize-pane -D 1

# History and buffer history
set-option -g history-limit 40000
set-option -g buffer-limit 400000

# Terminal emulator window title
set-option -g set-titles off
# set-option -g set-titles-string '#S:#I.#P #W'

# Status Bar
# set-option -g status-justify centre 
set-option -g status-left-length 24
set-option -g status-left  '#[fg=colour15][#S]#[default]'
set-option -g status-right '#[fg=colour15]%H:%M [#(hostname -s)]#[default]'

# Notifying if other windows has activities
set-option -g visual-activity on
set-window-option -g monitor-activity off

# Clock
set-window-option -g clock-mode-colour green
set-window-option -g clock-mode-style 24


# Swapping.

# Swap panes.
bind-key { swap-pane -d -s:.-1
bind-key } swap-pane -d -s:.+1

# Swap windows.
bind-key -r M-{ swap-pane -d -s:-1
bind-key -r M-} swap-pane -d -s:+1
bind-key X command-prompt -p "Swap with with number:" "swap-pane -d -s:%%"

# htop
bind-key "~" split-window -h "exec htop" \; swap-pane -U

# Logging
# Appears not to write anything to the file :(
bind-key "P" pipe-pane -o 'cat >>$HOME/logs/tmux.log' \; display-message 'Started logging to $HOME/logs/tmux.log'


# Layout
set-window-option -g other-pane-width 44
set-window-option -g other-pane-height 10