ctags

Generates an index (or tag) file of language objects found in source files for many popular programming languages.

TLDR

Generate tags for a single file, and output them to a file named "tags" in the current directory, overwriting the file if it exists

>_ ctags [path/to/file]
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Generate tags for all files in the current directory, and output them to a specific file, overwriting the file if it exists

>_ ctags -f [filename] *
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Generate tags for all files in the current directory and all subdirectories

>_ ctags --recurse
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