The previous script example required the sh program, a Linux shell, to run the script. You also had to have the script file, such as listrpmpkgs, available. So, if you have stored the file in /home2/bin, to run the script, use the following command:

$ sh /home2/bin/listrpmpkgs

That’s not very convenient. Furthermore, you always have to remember where you stored the script file listrpmpkgs. To make this command work better, you can turn your script into a command.