Shell Scripting

Part of the Linux course

You have worked out a sequence of six commands that does something useful: check a directory, make a folder, copy some files, print a summary. It works. Tomorrow you need it again, and you retype it from memory, and you get one argument wrong. A script is that sequence written down once, in a file, so the machine retypes it perfectly every time. There is no new language to learn here.

A script is a plain text file. There is no hello.sh in your lesson folder yet. Create it with this script: press Play on the block and the file is made for you. Pressing Play again does not make a second copy. ...