Linux and Shell Programming

Information technology is the study, design, development, implementation, support or management of computer-based information systems—particularly software applications and computer hardware. IT workers help ensure that computers work well for people.

A shell script is a text file that contains a sequence of commands for a UNIX-based operating system. ... The shell is the operating system's command-line interface (CLI) and interpreter for the set of commands that are used to communicate with the system.