What is tmux?

tmux (Terminal Multiplexer) is a powerful terminal tool that lets you:

• Run multiple shell sessions in a single terminal window.
• Keep processes running even after SSH disconnection.
• Reattach to sessions from anywhere.

If you’re running long scripts or model training on a server, tmux protects your work by keeping it alive when your network fails.

Basic Workflow (Step-by-Step)

Start a tmux session

tmux new -s session_name

Run the script like usual

python run.py
# or
bash attack_local.sh

Detach safely (but keep it running)

Press:

Ctrl + b, then d

Reattach later

tmux attach -t session_name

List all sessions

tmux ls

Kill a session when done

tmux kill-session -t session_name

What Happens if I Don’t Use tmux?

If you start a job in a normal SSH session and the session drops:

• Your training job is killed
• No way to resume it
• You may lose logs and progress

So for long or important tasks: Always use tmux

Common tmux Shortcuts

Resources

• tmux Cheat Sheet