Tmux is a powerful terminal multiplexer that lets you run multiple terminal sessions within a single window. However, when using tmux with macOS Terminal.app, you’ll encounter two common frustrations: colors don’t display properly, and you can’t use your terminal’s native scroll functionality. Instead, tmux captures scrolling and requires you to enter “copy mode” just to view previous output.
I've been a long-time user of GNU Screen, and I've always recommended it to anyone working with remote servers. Screen is an excellent tool that's saved me countless times when SSH connections drop or I need to run long-running processes. But it has one major problem: it's tough to configure and learn.
Recently I discovered tmux, and I'm making the switch. If you're not familiar with terminal multiplexers or you're struggling with Screen's complexity, tmux might be exactly what you need.