broadcast commands in parallel to tmux panes

tmux-parallel.sh

#!/bin/bash

# Usage: ./tmux-parallel.sh "command1" "command2" "command3" ...
# Creates a new tmux window with a pane for each command

if [ $# -eq 0 ]; then
    echo "Usage: $0 command1 [command2 ...]"
    exit 1
fi

# Get the current tmux session or start a new one
if [ -z "$TMUX" ]; then
    tmux new-session -d
fi

# Create a new window
window_name="parallel-$(date +%s)"
tmux new-window -n "$window_name"

# For the first command, we'll use the existing pane
tmux send-keys -t "$window_name" "${1}" C-m

# For each additional command, create a new pane and split
shift
while [ $# -gt 0 ]; do
    tmux split-window -t "$window_name"
    tmux send-keys -t "$window_name" "${1}" C-m
    tmux select-layout -t "$window_name" tiled
    shift
done

# Select the first pane
tmux select-pane -t "$window_name.0"