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Another way to view some code by keyword and basic regular expression
For example we need find fast where located and described keyword COMMIT_EDITMSG in man files. Here example howto solve it by search with command bzgrep in man files. Generally these files in bz compressed format. You can use another keywords to your search. Common syntax is:
bzgrep -lE keyword1 /usr/share/man/man?/optional-keyword-to-refine*
bzgrep -lE keyword1 /usr/share/man/man?/*
where optional-keyword-to-refine is optional and may be omitted but used to speedup search
Of course you may combine other options for bzgrep (its based on grep)
This command allow you quick find any executable by keyword(s) in your system.
NOTE: Sometime this command will output like this:
`hello.py.launch': No such file or directory
this is normal behaviour
this example describe how make custom query with boolean expression for search an package in gentoo
simple and easy backup your history with timestamp
This is maybe helpfull from system overheat on your linux box