Creating shell scripts is one of the most essential skills that Linux users should have at the tip of their fingers. Shell scripts play an enormous role in automating repetitive tasks which otherwise would be tedious executing line by line. In this tutorial, we highlight some of the basic shell scripting operations that every Linux user should have. We will start by creating a simple shell script, and to do this, we will use a text editor. There are quite a number of text editors , both command-line and GUI-based.
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Name it whatever you would like, but remember how you typed the name because we are going to be using that exact name in the terminal. Look on the very bottom right of the opened info window, and you will see a Lock icon that should appear locked. Click it, and if you have a password on your computer it will ask you for your password to unlock it, otherwise it will just unlock. Now we have to change the file we saved to an executable file. Type in chmod file Name.
A shell script, at its simplest, is an automated series of Linux commands stored for repeated later use. For this example, we are going to use a number of simple commands, like ls, pwd, chmod, touch, uname, ping and grep. Shell scripts are written using text editors. Once you have chosen a text editor, start the text editor, open a new file to begin to typing a shell script.