This resource is a step-by-step introductory lesson on tmux (Terminal Multiplexer). Perfect for Linux, DevOps, Programming, Cybersecurity, Networking, and Command Line courses where learners work heavily inside the terminal and need persistent, organized sessions (e.g., SSH, servers, or remote development). It teaches students how to run multiple terminal sessions from a single window, manage sessions, windows, and panes, and use tmux for productive multitasking in the command line. The less