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How to search for a string in text files?

I want to check if a string is in a text file. If it is, do X. If it's not, do Y. However, this code always returns True for some reason. Can anyone see what is wrong? ...
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How to grep Git commit diffs or contents for a certain word?

In a Git code repository I want to list all commits that contain a certain word. I tried this 8 Answers ...
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Perform debounce in React.js

How do you perform debounce in React.js? 34 Answers 34 ...
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Is there a way to give a specific file name when saving a file via cURL?

I am pulling files using curl in the mac OS X terminal and want to give them different names. Is there a way to specify a name, such as a "save as" function when using curl? ...
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How to store standard error in a variable

Let's say I have a script like the following: 18 Answers 18 ...
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Simple example of threading in C++

Can someone post a simple example of starting two (Object Oriented) threads in C++. 7 Answers ...
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How to run a C# console application with the console hidden

Is there a way to hide the console window when executing a console application? 13 Answers ...
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Saving interactive Matplotlib figures

Is there a way to save a Matplotlib figure such that it can be re-opened and have typical interaction restored? (Like the .fig format in MATLAB?) ...
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How to terminate a Python script

I am aware of the die() command in PHP which exits a script early. 10 Answers 10 ...
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How to load json into my angular.js ng-model?

I have what I think is probably a very obvious question, but I couldn't find an answer anywhere. 3 Answers ...