nohup is enough

Starting a multi-hour rsync over SSH, I reached for tmux out of habit and got a socket error instead of a session.

I could have fixed the socket, but the requirement was smaller than the tool. All I actually needed was for the process to survive my connection dropping, which is one line: nohup rsync ... > /tmp/migration.log 2>&1 &, then tail -f on the log whenever I want to check in.

Worth knowing because it needs nothing installed, which matters exactly when you’re on a machine you’ve just started troubleshooting. tmux is better when you want to come back to a live terminal — but for fire-and-watch-the-log jobs, it’s a dependency you don’t need.