Background jobs and the terminal

Articles

• sleep — delay execution — Pauses execution for a specified duration; does not test whether another program is ready.
• wait — wait for a child task in Bash — A Bash builtin that waits for a child task and returns its completion status.
• ps — list processes — The ps command lists running processes with PID, owner, state, CPU and memory use, and the command line.
• kill — send a signal to a process — The kill command sends a signal to a PID — ask it to exit (TERM), reload settings (HUP), or end it at once (KILL).
• Background jobs in the shell — &, jobs, nohup — Running things in the background, shell job control, surviving logout.