My tmux config

.tmux.conf

# remap prefix to Ctrl-a instead of Ctrl-b
unbind C-b
set -g prefix C-a

# Allow C-A a to send C-A to application. Useful for Vim, other apps
bind C-a send-prefix

# Reload the .tmux.conf file with Ctrl-r
bind-key r source-file ~/.tmux.conf \; display-message "Configuration reloaded"


# start window index of 1 instead of 0
set-option -g base-index 1

# Start panes at 1 instead of 0. tmux 1.6 only
setw -g pane-base-index 1


# UTF-8 character support in the status bar
set-option -g status-utf8 on

# Lowers the delay time between the prefix key and other keys - fixes pausing in vim
set-option -sg escape-time 1

# Uncomment these if you'd like to use the mouse for some reason
set-window-option -g mode-mouse on
set-option -g mouse-select-pane on
set-option -g mouse-resize-pane on
set-option -g mouse-select-window on



# When in Copy mode, act like vim
set-window-option -g mode-keys vi

# Select panes with Prefix h, j, k, and l
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

# Cycle windows with Ctrl-h and Ctrl-l
bind-key -r C-h select-window -t :-
bind-key -r C-l select-window -t :+
 


# look good, but ensure your terminal emulator supports this.
# Recommend iTerm2 on OS X with the xterm-256 profile.
set -g default-terminal "screen-256color"

set -g history-limit 5000

# # Rebinding the pane splitting bindings  | and - 
bind | split-window -h
bind - split-window -v

# Open pane in same directory. Only works when current pane is at a prompt :(
# Uses the tmux-panes script.
unbind V
unbind H
bind V send-keys " ~/tmux-panes -h" C-m
bind H send-keys " ~/tmux-panes -v" C-m

# # Set window notifications
setw -g monitor-activity on
set -g visual-activity on

# panes

bind-key -r J resize-pane -D 5
bind-key -r K resize-pane -U 5
bind-key -r H resize-pane -L 5
bind-key -r L resize-pane -R 5

# Styles the pane borders
set-option -g pane-border-fg green
set-option -g pane-border-bg black

# Styles the active pane border. Helps when you have
# more than two panes.
set-option -g pane-active-border-fg white
set-option -g pane-active-border-bg yellow


# statusbar --------------------------------------------------------------

# # default statusbar colors
set-option -g status-fg white
set-option -g status-bg black
set-option -g status-attr default

# # default window title colors
set-window-option -g window-status-fg cyan
set-window-option -g window-status-bg default
set-window-option -g window-status-attr dim

# # active window title colors
set-window-option -g window-status-current-fg white
set-window-option -g window-status-current-bg red
set-window-option -g window-status-current-attr bright

# # command/message line colors
set-option -g message-fg white
set-option -g message-bg black
set-option -g message-attr bright

# # Refresh the status bar every 1 second.
set-option -g status-interval 1000

# # The status bar itself.
# Uses the battery script below to display battery remaining
# in the status bar.
set -g status-justify centre
set -g status-left-length 40
set -g status-left "#[fg=green]Session: #S #[fg=yellow]#I #[fg=cyan]#P"
set -g status-right "#[fg=blue]#(~/battery Discharging) | #[fg=cyan]%d %b %R"

# Time messages remain in the status bar. Lower this number
# if this is too distracting. 
set-option -g display-time 4000

# Pipe the current pane to a log file with Shift-H - Press Shift-H again to stop.
bind-key H pipe-pane -o "cat >>$HOME/#W-tmux.log" \; display-message "Toggled logging to $HOME/#W-tmux.log"



# Show url in buffer on osx
bind C-o run-shell "open $(tmux show-buffer)"

# Maximize and restore panes. Don't switch windows between using these :)
# maximize
unbind Up
bind Up neww -d -n tmp \; swap-pane -s tmp.1 \; select-window -t tmp

# Restore
unbind Down
bind Down last-window \; swap-pane -s tmp.1 \; kill-window -t tmp

# Sync panes - send what you're typing to other panes.
bind C-s set-window-option synchronize-panes


# OSX Clipboard support

bind C-v run "tmux set-buffer $(reattach-to-user-namespace pbpaste); tmux paste-buffer"
bind C-c run "tmux save-buffer - | reattach-to-user-namespace pbcopy"

# Linux clipboard support
bind C-p run "tmux set-buffer \"$(xclip -o -selection clipboard)\"; tmux paste-buffer" 
bind C-y run "tmux save-buffer - | xclip -i -selection clipboard"

battery

#!/bin/sh

# This needs to be in the home folder and needs
# to be chmod +x so it runs right.

linux_get_bat ()
{
    bf=$(cat $BAT_FULL)
    bn=$(cat $BAT_NOW)
    BAT=`echo "100 * $bn / $bf" | bc`
    echo $BAT
}

freebsd_get_bat ()
{
    echo "$(sysctl -n hw.acpi.battery.life)%"

}

# Do with grep and awk unless too hard

# TODO Identify which machine we're on from teh script.

case $(uname -s) in
    "Linux")
        BATPATH=/sys/class/power_supply/BAT0
        STATUS=$BATPATH/status
        BAT_FULL=$BATPATH/energy_full
        BAT_NOW=$BATPATH/energy_now
        if [ "$1" = `cat $STATUS` -o "$1" = "" ]; then
            echo $(linux_get_bat)%
        fi
        ;;
    "FreeBSD")
        STATUS=`sysctl -n hw.acpi.battery.state`
        case $1 in
            "Discharging")
                if [ $STATUS -eq 1 ]; then
                    freebsd_get_bat
                fi
                ;;
            "Charging")
                if [ $STATUS -eq 2 ]; then
                    freebsd_get_bat
                fi
                ;;
            "")
                freebsd_get_bat
                ;;
        esac
        ;;
    "Darwin")
        case $1 in
            "Discharging")
                ext="No";;
            "Charging")
                ext="Yes";;
        esac

        ioreg -c AppleSmartBattery -w0 | \
        grep -o '"[^"]*" = [^ ]*' | \
        sed -e 's/= //g' -e 's/"//g' | \
        sort | \
        while read key value; do
            case $key in
                "MaxCapacity")
                    export maxcap=$value;;
                "CurrentCapacity")
                    export curcap=$value;;
                "ExternalConnected")
                    if [ "$ext" != "$value" ]; then
                        exit
                    fi
                ;;
                "FullyCharged")
                    if [ "$value" = "Yes" ]; then
                        exit
                    fi
                ;;
            esac
            if [[ -n "$maxcap" && -n $curcap ]]; then
                BAT=`echo "100 * $curcap / $maxcap" | bc`
                echo ${BAT}%
                exit
            fi
        done
esac

tmux-panes

TMUX_CURRENT_DIR=`pwd`
tmux split-window $1
tmux send-keys "cd $TMUX_CURRENT_DIR;clear" C-m