Write a sequence of commands or a script that demonstrates variable expansion occurs before pathname expansion.

Write a shell script that outputs the name of the shell executing it.

Explain the behavior of the following shell script:

a. How many arguments does each echo command see in this script? Explain.

b. Redefine the IFS shell variable so the output of the second echo is the same as the first.

Add the exit status of the previous command to your prompt so it behaves similarly to the following:

$ cat quote demo twoliner "This is line 1.. This is line 2." echo "Stwoliner" echo Stwoliner