【超簡単】複数のtmuxを自動起動するシェルを作成した件

#!/usr/bin/env bash
set -euo pipefail

# Usage: ./start_tmux_sessions.sh [count] [basename]
# - count:   number of sessions to create (default 2)
# - basename: prefix for session names (default "codex")

count="${1:-2}"
basename="${2:-codex}"
workdir="/Users/izumikohei/Desktop/tool"
terminal_app="Terminal"  # change to "iTerm" if you prefer iTerm2

if ! [[ "$count" =~ ^[0-9]+$ ]] || [ "$count" -lt 1 ]; then
  echo "count must be a positive integer" >&2
  exit 1
fi

created=()
for i in $(seq 1 "$count"); do
  name="${basename}${i}"
  if tmux has-session -t "$name" 2>/dev/null; then
    echo "Session '$name' already exists; skipping creation."
  else
    tmux new-session -d -s "$name" -c "$workdir"
    created+=("$name")
  fi

  # Open a fresh terminal window/tab attached to this session.
  osascript <<EOF
tell application "$terminal_app"
  do script "tmux attach -t $name"
  activate
end tell
EOF
done

exit 0

./start_tmux_sessions.sh 4