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RTFM /R-T-F-M/ [UNIX] imp. Acronym for “Read the fucking manual”. Used by gurus to brush off questions they consider trivial or annoying. Compare Don’t do that then! 2. Used when reporting a problem to indicate that you aren’t just asking out of randomness. “No, I can’t figure out how to interface UNIX with my toaster, and yes, I have RTFM.” Unlike sense 1, this use is considered polite. See also FM, RTFAQ, RTFB, RTFS, RTM, all of which mutated from RTFM, and compare UTSL. — The Jargon File. Eric S. Raymond, Ed.