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Now with that knowledge we have learned it's time to build something amazing.

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Imagine that you work for a company where a group of people work with specific files which cannot have

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dabster spaces at the beginning or at the end of lines.

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So your boss asked you to create a script for checking if there is no space or up at the beginning or

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at the end of each line.

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And also the script should be able to fix possible issues.

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And that means remove any space or taps at the beginning or at the end of each line.

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So when I for example check file that text I see graphically where the spaces and tabs are present.

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And in addition I also see line numbering.

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So here I have eight lines and batch of errors.

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But I should be able to fix it.

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Now let's use barometer H for help.

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So I see that using parameter def or a fix I can fix space issue.

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So let's write

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I see printed fixing spaces and UPS at the beginning and at the end of lines then I see content of the

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file with no error and the message with the green background done so fixes them has rejected we don't

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see any issue now.

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Great.

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So let's create some errors.

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So I got a few spaces summed up on another line.

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I am adding new spaces and also I can add more taps next to each other and do on space here and we can

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save the file.

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Now we can run our script.

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And if you write we see where the arrows are great.

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So let's fix it.

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I will now instead of Desch f barometer use parameter.

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They should fix

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both of them do the same.

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And I see.

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Message them when I recheck.

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I don't see any space issue.

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Great.

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It works perfectly.

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I can of course use another location for example I can check Basford file.

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I don't see any red warning here.

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So password file doesn't have any space or top at the beginning or at the end of each line.

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So in following pictures we will build discrete Step-By-Step we will use a lot of set features and we

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will definitely Pretis require expression it out.

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Basically we will use knowledge we have learned about scripting and combine them with set.