Nodes for the term “filename extension”

How to use the Linux sed command to edit many files in place (and make a backup copy)

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Linux: How to find multiple filenames with the ‘find’ command

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Unix: How to find files with multiple filename extensions

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How to use multiple filename search patterns with Linux find

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How to associate filename extensions with your Mac Java application

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Linux find command: How to find files not matching a pattern

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