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Tutorial10: Shell Scripting - Part 1

8 bytes added, 10:19, 3 September 2020
INVESTIGATION 2: USING VARIABLES IN SHELL SCRIPTS
# Add the following line to the bottom of the file:<br><span style="font-family:courier;">echo "The current shell you are using is: $SHELL"</span><br><br>
# Save your editing changes and exit your text editor.<br><br>
# Issue the following linux command to change to the Bourne Shell (a different shell than the default Bash):<br><span style="color:blue;font-weight:bold;font-family:courier;">sh</span><br><br>
# Issue the following linux command to confirm you are in the Bourne Shell:<br><span style="color:blue;font-weight:bold;font-family:courier;">echo $SHELL</span><br><br>You should see the output of the command that you are located in the Bourne Shell.<br><br>
# Run your '''hello.bash''' shell script.<br><br>What shell does the shell script indicate is running?<br><br>This is because there is NO '''she-bang line''' at the top of the shell script; therefore, it is being run in the '''Bourne Shell''' (i.e. the <u>current shell</u>).<br><br>Let's '''add''' a '''she-bang line''' to the top of this shell script file so it <u>forces</u> the shell script to run in the '''Bash Shell''' instead of the Bourne Shell.<br><br>
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