execute_in_all_panes.sh

#!/bin/bash

# Runs the specified command (provided by the first argument) in all tmux panes
# for every window regardless if applications are running in the terminal or not.
function execute_in_all_panes {

  # Notate which window/pane we were originally at
  ORIG_WINDOW_INDEX=`tmux display-message -p '#I'`
  ORIG_PANE_INDEX=`tmux display-message -p '#P'`

  # Assign the argument to something readable
  command=$1

  # Count how many windows we have
  windows=$((`tmux list-windows | wc -l` - 1))

  # Loop through the windows
  for (( window=0; window <= $windows; window++ )); do
    tmux select-window -t $window #select the window

    # Count how many panes there are in the window
    panes=$((`tmux list-panes| wc -l` - 1))
    # debugging
    #echo "window:$window pane:$pane";
    #sleep 1

    # Loop through the panes that are in the window
    for (( pane=0; pane <= $panes; pane++ )); do
      # Skip the window that the command was ran in, run it in that window last
      # since we don't want to suspend the script that we are currently running
      # and also we want to end back where we started..
      if [ $ORIG_WINDOW_INDEX -eq $window -a $ORIG_PANE_INDEX -eq $pane ]; then
          continue
      fi
      tmux select-pane -t $pane #select the pane
      # Send the escape key, in the case we are in a vim like program. This is
      # repeated because the send-key command is not waiting for vim to complete
      # its action... also sending a sleep 1 command seems to fuck up the loop.
      for i in {1..25}; do tmux send-keys C-[; done
      # temp suspend any gui thats running
      tmux send-keys C-z
      # if no gui was running, remove the escape sequence we just sent ^Z
      tmux send-keys C-H
      # run the command & switch back to the gui if there was any
      tmux send-keys "$command && fg 2>/dev/null" C-m
    done
  done

  tmux select-window -t $ORIG_WINDOW_INDEX #select the original window
  tmux select-pane -t $ORIG_PANE_INDEX #select the original pane
  # Send the escape key, in the case we are in a vim like program. This is
  # repeated because the send-key command is not waiting for vim to complete
  # its action... also sending a sleep 1 command seems to fuck up the loop.
  for i in {1..25}; do tmux send-keys C-[; done
  # temp suspend any gui thats running
  # run the command & switch back to the gui if there was any
  tmux send-keys C-c "$command && fg 2>/dev/null" C-m
  tmux send-keys "clear" C-m

}

execute_in_all_panes "echo OH HAI"