iTerm2 wallpaper changer

wpchange.sh

#!/bin/sh

CMDNAME=`basename $0`
BASE_DIR=$(cd $(dirname $0);pwd)

image_list=(${BASE_DIR}/*.jpg)
numimglist=${#image_list[@]}
rannum=$(( $RANDOM % ${numimglist}))
image_path=${image_list[$rannum]}

osascript -e "tell application \"iTerm\"
                set current_terminal to (current terminal)
                tell current_terminal
                  set current_session to (current session)
                  tell current_session
                    set background image path to \"$image_path\"
                  end tell
                end tell
              end tell"