A shell is a crucial part of an Unix-based operating system and is the main interface we can use to interact with the system itself. Bash is without doubt the most used shell on the majority of Linux distributions: it was born as thefree software replacement for the Bourne shell
(bash is the acronym for Bourne-again shell) inside the GNU project. In this tutorial we will learn how some of the most useful bash expansions works.
In case you are not familiar with Bash yet, or you simply need to refresh your memory, then you are recommended to visit our Bash Scripting Tutorial for Beginners, before you dive into the Bash Shell expansions concept below.
In this tutorial you will learn:
- How to use various bash parameter expansions