Bash Scripting: Everything you n

Bash Scripting: Everything you need to know about Bash-shell programming
Bash (AKA Bourne Again Shell) is a type of interpreter that processes shell commands. A shell interpreter takes commands in plain text format and calls Operating System services to do something. For example, ls command lists the files and folders in a directory.
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https://medium.com/sysf/bash-scripting-everything-you-need-to-know-about-bash-shell-programming-cd08595f2fba