This is a Unix bash shell that provides users ability to create processes, run Unix command line utilities, store a history of last 10 commands and 15 process IDs.
Commands: "quit" or "exit": Shell will exit with status zero. cd folder: changes current directory to the given folder showpids: list the PIDs of the last 15 processes !n : re-runs nth command where n is a number between 1 and 15. history : list the last 15 commands entered by the user