Stage 8 · Lesson 5 of 9

tmux: sessions that survive disconnects

is a terminal multiplexer: it keeps shell sessions running on a server even if your connection drops. It can also split one terminal into several windows and . Start a session with tmux new -s work.

Detach, leaving it running, with Ctrl+B then D. Later, reconnect with tmux attach -t work. Long jobs on a server, such as a big download or a import, belong inside tmux.

It works on your own machine too. Learn about five shortcuts and stop there until you need more.

Common trapstarting a long job over plain SSH, losing Wi-Fi and losing the job.

A question to check yourself, an AI practice session and 1 cheat sheet entry come when you add the roadmap to your account. Add it

Resources for this stage

Start with· follow one of these

GuideFree
Initial Server Setup with Ubuntu (DigitalOcean)
DigitalOcean · Beginner
A clear, widely used checklist for a new user, sudo, SSH access and a firewall on Ubuntu
CourseFree
The Missing Semester of Your CS Education
MIT · Beginner
The command-line environment lecture covers SSH, tmux, job control and dotfiles

Practise

Linux Upskill Challenge
A free month of daily sysadmin tasks on your own server, from SSH to logs and scheduling
OverTheWire: Bandit
Its later levels need SSH keys, ports and network tools to move on

Keep handy

Everything curl
The free book on curl by its creator, for every option you will need
VS Code Remote Development
Edit files on your server (or in WSL) from VS Code over SSH

Also worth your time

roadmap.sh: LinuxGo deeper
The server, networking and troubleshooting branches of the Linux map