GNU Screen
GNU Screen is a terminal multiplexer that allows users to manage multiple terminal sessions within a single window or remote connection. It enables the creation of multiple virtual terminals, detaching and reattaching sessions, and sharing sessions between users. This tool is particularly useful for long-running processes and remote server administration.
Developers should learn GNU Screen when working with remote servers via SSH to maintain persistent sessions that survive network disconnections, or when needing to run multiple command-line tasks concurrently without opening separate terminal windows. It's essential for system administrators and DevOps engineers managing production environments, as it allows detaching from a session and returning later without interrupting running processes.