Simply put, a Shell Script is a program that is run by a UNIX/Linux shell. It is a file that contains a series of commands which are executed sequentially as if they were entered on the command line ...

The Linux expect command takes script writing to an entirely new level. Instead of automating processes, it automates running and responding to other scripts.

The Linux script command has been around for ages and provides a simple but useful service. It lets you record command line activity – both input and output.