After performing Exercise 3, use the test command to evaluate whether the shell variable contains a reference to the Bash shell and use the echo command to determine the result. (Note that this provides one way to verify from within a script that the script user is set up to use the Bash shell.)
REFERENCE:
3. Set your shell from the command line to be the Bash shell. Then use the echo command to verify the contents of the shell variable. What is now contained in the shell variable?
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