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.

inall.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

  # Loop through the windows
  for window in `tmux list-windows -F '#I'`; do
    tmux select-window -t $window #select the window

    # debugging
    # echo "window:$window pane:$pane";
    # sleep 1

    # Loop through the panes that are in the window
    for pane in `tmux list-panes -F '#P'`; 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 $ORIG_PANE_INDEX #select the original pane
  tmux send-keys "$command" C-m
}

if [ "$1" ]; then
  execute_in_all_panes "$1"
else
  echo "No command given!"
fi