Shell scripting is kind of a catch-all term for putting a series of commands into a single executable file.

How do we use this file?

%> chmod +x example1.sh -- first make it executable

%> ./example1.sh -- then simply execute it

You can use variables in shell scripts too.

Another example.

%> chmod +x example2.sh -- make it executable

%> ./example2.sh trilling -- did it work?

There are lots and lots and LOTS of other things you can do with shell scripts.

For example, you can do loops, conditional statements, math, and so on.

And of course, you can have shell scripts call other shell scripts, etc.