Shell Scripting: How to Automate Command Line Tasks Using Bash Scripting and Shell Programming by Cannon Jason

Author:Cannon, Jason [Cannon, Jason]
Language: eng
Format: epub, pdf
Published: 2015-09-13T16:00:00+00:00

cd /var/www

cp *.html /var/www-just-html

Let's say you want to do something for each file that matches a wildcard. In that case, you can use a for loop. Let's use a for loop to perform an action on all the html files in a directory.

The following script simply echoes to the screen the name of the file that is about to be copied, and then copies that file from the /var/www directory to the /var/www-just-html directory. Of course, you could do something more complex in this loop if you wanted.

Notice that the wildcard expression is being used where you would normally provide a list. This wildcard expression will expand to create a list of matching file and directories. In the case that the wildcard is not matched, the for loop is not executed. Also notice that we are explicitly changing into a directory before we use the wildcard.

#!/bin/bash

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