Changes

# Issue the '''chmod''' command to add execute permissions for the user for the '''command-substitution.bash''' file.<br><br>

# Issue the following to run the user-variables.bash Bash shell script:<br><span style="color:blue;font-weight:bold;font-family:courier;">./command-substitution.bash</span><br><br>Confirm that your shell script displays the correct information for your Matrix account.<br><br>