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Tutorial12: Shell Scripting - Part 2

No change in size, 18 March
INVESTIGATION 2: ADDITIONAL LOOPING STATEMENTS
# Enter the following lines in your shell script:<br><span style="font-family:courier;font-weight:bold;">#!/bin/bash<br>clear<br>set $(ls)<br>echo Here are files in my current directory:"<br>echo<br>for x<br>do<br>&nbsp;&nbsp;&nbsp;echo " &nbsp;&nbsp;&nbsp;$x"<br>done</span><br><br>
# Save your editing session and exit the text editor (eg. with vi: press '''ESC''', then type ''':x''' followed by '''ENTER''').<br><br>
# '''Add execute permissions''' and '''run''' this Bash shell script.<br><br>What do you notice?<br><br>We can reduce a line in our shell script by using '''command substitution''' in the for loop instead of using <br>the '''set''' command.<br>Let's demonstrate this in another shell script.<br><br>
# Use a text editor like vi or nano to create the text file called '''for-5.bash''' (eg. <span style="color:blue;font-weight:bold;font-family:courier;">vi for-5.bash</span>)<br><br>
# Enter the following lines in your shell script:<br><span style="font-family:courier;font-weight:bold;">#!/bin/bash<br>clear<br>echo "Here are files in my current directory:"<br>echo<br>for x in $(ls)<br>do<br>&nbsp;&nbsp;&nbsp;echo " &nbsp;&nbsp;&nbsp;$x"<br>done<br></span><br>
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