A script for a computer tells the computer what it should do or say. In the context of Bash scripts, we are telling the Bash shell what it should do. A Bash script is a plain text file that contains a series of commands. Bash scripts can be used for various purposes, such as executing a shell command, running multiple commands together, customizing administrative tasks, performing task automation, etc. So knowledge of bash programming basics is important for every Linux user; therefore, relying on this is the power of shell scripting.