In this lab you will learn to write and execute a shell script that includes comments. you will use chmod to make the file that holds the script executable and include a line that starts with #! in the script to make sure bash executes it. this lab also provides an introduction to positional parameters.

reading read "writing and executing a simple shell script" on pages 294–299 of sobell. procedure
1. use vim or cat (see page 20 of this lab manual for instructions) to create a file named short with the following line in it:
echo 'hi there'

2. use cat to verify the contents of short and then try to execute it. use ls –l to display the permissions for short. read the tip on sobell, page 296.