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    Note that these section numbers are for Linux. 1, 3 and 6 are the same across all unix variants AFAIK, but the others and the non-lone-digit sections can differ. Usually man X intro describes what is in section X. Commented Oct 28, 2010 at 22:31
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    @KeithB: I've used some unices with different 4,5,7,8. Digital Unix (OSF1) had, and Solaris still has: file formats in 4, misc in 5, devices in 7. Solaris also puts administrator commands in 1m. I think system calls in 2 is universal, but some systems also have some C library interfaces in 2 (when they're supposed to be thin wrappers around the eponymous syscall). Commented Oct 29, 2010 at 20:20
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    man -w -a will show paths to all versions of manpage without displaying them. Commented Mar 28, 2013 at 14:51
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    or: $ whatis printf from man 1.6 (instead of 'man -k "^printf"') Commented Aug 14, 2014 at 16:55
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    Huh, who'da thought you'd need a manual to use a manual... Never have I ever executed man man... until now.
    – Matt Clark
    Commented Dec 4, 2015 at 15:44