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→INVESTIGATION 2: USING VARIABLES IN SHELL SCRIPTS
# Run your shell script: <span style="color:blue;font-weight:bold;font-family:courier;">./hello</span><br><br>What shell does the shell script indicate is running?<br>You should notice that this script is being run in the Bourne shell.<br><br>Although your shell script should work, it is recommended to force your shell script to run in a '''specific''' shell.<br>This helps prevent your shell script encountering errors when run in the incorrect shell<br>(i.e. syntax not recognized in a specific shell).<br><br>
# Edit your '''hello''' shell script using a text editor.<br><br>
# Insert the following line at the '''beginning''' of the '''first''' line of your hello file:<br><span style="font-family:courier;">#!/bin/bash</span><br><br>This is referred to as a '''she-bang line'''. It forces the script to be run in the '''Bash Shell'''.<br>When your Bash Shell script finishes execution, you are returned to your current shell that you are using <br>(which in our case in Matrix, is still the Bash shell).<br><br>
# Save your editing changes and exit your text editor.<br><br>
# It is a good idea to rename your shell script to include an extension to indicate that the file is a Bash Shell script file. <br>Issue the following linux command to rename your shell script file:<br><span style="color:blue;font-weight:bold;font-family:courier;">mv hello hello.bash</span><br><br>
