<caption><image_33>The image is a screenshot of a computer screen with a list of items on it. The list is written in green text on a black background. The items are arranged in a grid-like pattern, with each item having a title and a description. 

The list includes items such as "cat phfind", "grep", "Smith", "phone", "list", "7-7989", "training", and "19 Dec". The items appear to be related to a training or training session.

At the bottom of the screen, there is a bar graph that shows the number of items in each item. The bar graph is green and shows a percentage of the items in the list.</caption> what they're expected what happens if somebody enters pH find and does not add an argument to search for as you can see grep prints an error message when we entered this command what happened was this because there's no command-line argument for this shell to substitute for the dollar one inside pH find grep doesn't get past a pattern grep always has to be past a pattern and so it fails and that's the cause of the error message the pH find command works but only if the user uses it properly this is not a very effective way to write scripts that other people might use there's a couple of problems that should be fixed with pH find first we
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