Tmux

You SSH into a server to run a long task, the network drops, and the task is gone. Tmux exists to solve exactly this — it decouples the terminal session from the window, so the process keeps running after you close the terminal. Tmux's three layers: a Session contains Windows, a Window contains Panes The Core Problem It Solves # An ordinary terminal window is bound to its processes. Close the window and the processes die. Same story when SSH drops.