Man page
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A man page, short for manual page, is a form of software documentation found on Unix and Unix-like operating systems. Topics covered include programs, system libraries, system calls, and sometimes loc
The man page for the sed utility, as seen in various Linux distributions
RTFM
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RTFM is an initialism and internet slang for the expression "read the fucking manual", typically used to reply to a basic question where the answer is easily found in the documentation, user guide, ow
Man page
…README RTFM ManOpen – NeXT/macOS graphical man utility…
A mug labelled 'RTFM'
Illustration of the phrase by David Revoy