<caption><image_32>The image is a screenshot of a computer screen with a code written on it. The code is written in green text and is in the form of a binary code. The background of the screen is black, and the text is in white. 

The code appears to be a list of items written in binary code, with the first item being "phsmith" and the second item being the "cat phfind". The first item is "grep $1 phone.list" and it is written as "phfind Smith". The second item is a "7-7989" item, which is the first step in the code.

There is also a green bar at the bottom of the code, which reads "training". This indicates that the code is being used to track the progress of a training session.</caption> line that is inside your script file this is described in more detail and a different example is used in the textbook and if this doesn't seem clear to you I suggest you read that there however it's not important that you understand in detail how this works because there's a very simple solution the shell will not reinterpret a substituted positional parameter if you enclose it in double quotes you never know what a user is going to enter on the command line as a result you're never certain what characters are contained inside an argument when it gets substituted for a positional parameter I always put double quotes around my positional parameters when I put them in scripts but I don't have to worry about this reinterpretation problem implemented with shell let's go back to the ph find script i've now inserted double quotes inside that script so the current version of ph find we've actually introduced another problem now pH find expects the user to enter an argument on the command line but as you know users don't always do
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