Changes

In this section, you will learn more about the for loop and learn how to ..use the while loop for error-checking.

# Use a text editor like vi or nano the '''more''' command to create view the contents of the text file called '''for-1.bash''' (eg. <span style="color:blue;font-weight:bold;font-family:courier;">vi more for-1.bash</span>)<br><br>If As you are using the nano text editor, refer to notes on text editing in a previous week in the course schedule.<br><br># Enter the following lines in your shell script:<br><span style="font-family:courier;">#!/bin/bash<br>clear<br>for 5 4 3 2 1<br>do<br>&nbsp;&nbsp;&nbsp;echo $x<br>done<br>echo "blast-off!"</span><br><br># Save your editing session and exit the text editor (eg. with vi: press should have noticed from ''tutorial 10'ESC'that the '', then type 'for'':wx''' followed by '''ENTER''')loop can use a list.<br><br># Issue You can also use the following linux command to add execute permissions for your shell script:<br><span style="color:blue;font-weight:bold;font-family:courier;">chmod u+x for-1.bash</span><br><br># Run your loop with positional parameters stored as arguments from an executed shell script by issuing: <span style="color:blue;font-weight:bold;font-family:courier;">./for-1We will revisit this now.bash</span><br><br># Use a text editor like vi or nano the more command to create view the text file called '''for-2.bash''' (eg. <span style="color:blue;font-weight:bold;font-family:courier;">vi more for-12.bash</span>)<br><br>If you are using the nano text editor, refer to notes on text editing in a previous week in the course schedule.<br><br>