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Find and Replace Inside a Text File from a Bash Command
What's the simplest way to do a find and replace for a given input string, say abc , and replace with another string, say XYZ in file /tmp/file.txt ?
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Can I run multiple versions of Google Chrome on the same machine? (Mac or Windows)
This fabulous answer suggests there’s no way to run multiple versions of Google Chrome on one machine.
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Quick-and-dirty way to ensure only one instance of a shell script is running at a time
What's a quick-and-dirty way to make sure that only one instance of a shell script is running at a given time?
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What is an existential type?
I read through the Wikipedia article Existential types . I gathered that they're called existential types because of the existential operator (∃). I'm not sure what the point of it is, though. What's the difference between
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In Python how should I test if a variable is None, True or False
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rails 3.1.0 ActionView::Template::Error (application.css isn't precompiled)
I made a basic rails app with a simple pages controller with an index function and when I load the page I get:
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How do you do a simple “chmod +x” from within python?
I want to create a file from within a python script that is executable.
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How to do a newline in output
How do I make \n actually work in my output? At the moment it just writes it all in 1 long block. Thanks for any help
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How to exit a 'git status' list in a terminal?
I'm new to Git and the terminal. How can I exit a listing mode generated by the git status command?
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Reason for Column is invalid in the select list because it is not contained in either an aggregate f
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