1. Write a script that prints the current date, your user name, and the name of your login shell. Use variables and/or commands. Do not use literals.

2. Write a script that creates three background processes, waits for them all to complete, and then displays a simple message.

3. Experiment with the exec command by writing a series of three shell scripts called "a.sh," "b.sh," and "c.sh" that each display their name using a command line parameter, execute ps, and then exec the next script in the sequence. Observe what happens when you start the first script by: exec a.sh (Note: You are going to link your files to my working directory, so make sure your naming of and/or pathing to the files will work when they run in my directory.)

4. Write a script that echos the following special variable: $$, $0, $1, ${10}, $*, $@, and $#. The script must work with the input and output below. Your pid will be different but the rest of the rest will match.

5. Write a script that clears the screen, determines how many sessions you are in (use who, grep, and wc), compare 2 files that are passed as parameters using diff and cmp, and sort the first file.