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Tutorial10: Shell Scripting - Part 1

37 bytes added, 16 March
INVESTIGATION 2: SHE-BANG LINE / VARIABLES / PARAMETERS
# Issue the following to run your Bash shell script just by name:<br><span style="color:blue;font-weight:bold;font-family:courier;">hello.bash</span><br><br>Did your Bash shell script run?<br><br>
# Exit your Matrix session, and log back into your Matrix session.<br><br>
# Re-run the '''hello.bash''' shell script by just using the name.<br><br>What did you notice?<br><br>The setting of the '''PATH''' environment variable only worked in the current session only.<br>If you exit the current Matrix session, then the recently changed settings for environment variables will be lost.<br>You will in a <u>future</u> tutorial how to set environment variables in '''start-up''' files.<br><br><span style="color:red;">'''ATTENTION:''' Students will might get FRUSTRATED when performing their '''assignment 3''' when their Bash shell scripts have errors. <br>One major cause is that the the OUTPUT of <u>your</u> their Bash shell script when run does NOT not '''EXACTLY match the '''the required output<br>for the '''correct''' of the assignment checking programBash shell script. <br><br>This requires that you CAREFULLY '''read''' the requirements of your Bash shell script and create it to match the EXACT specifications</span>.<br><br>
# Issue the following Linux command to run a checking script:<br><span style="color:blue;font-weight:bold;font-family:courier;">bash /home/murray.saul/myscripts/week10-check-2 | more</span><br><br>If you encounter errors, make corrections and '''re-run''' the checking script until you<br>receive a congratulations message, then you can proceed.<br><br>Let's create a Bash shell script that contain '''user-created variables'''.<br><br>
# Use a text editor to create a Bash shell script called '''user-variables.bash'''<br><br>
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