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Tutorial10: Shell Scripting - Part 1

92 bytes added, 13:48, 17 February 2021
INVESTIGATION 3: USING CONTROL FLOW STATEMENTS
: Before learning about logic and loop control-flow statements, you need to first learn about issuing test conditions using the '''test''' command.<br><br>
# Confirm that you are located in your '''home''' directory in your Matrix account.<br><br>
# Issue the following linux commands at the Bash shell prompt to assign values to several variables:<br><span style="color:blue;font-weight:bold;font-family:courier;">course="ULI101"<br>number1=5<br>number2=10</span><br><br>
# Issue the following linux command to test a condition:<br><span style="color:blue;font-weight:bold;font-family:courier;">test $course = "ULI101"</span><br><br>The '''$?''' variable is used to store an exit status of the previously command issued (including the test command). If the status is '''zero''', then it indicates a TRUE value and if the status is '''non-zero''', then it indicates a FALSE value.<br><br>
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