man - display online manual pages
man [-antkfq] [-M path] [-s section] title ...
Man displays the online manual pages for the specified titles in the
specified sections. The sections are as follows:
1 User Commands
Generic commands such as ls, cp, grep.
2 System Calls
Low level routines that directly interface with the kernel.
3 Library Routines
Higher level C language subroutines.
4 Device Files
Describes devices in /dev.
5 File Formats
Formats of files handled by various utilities and subroutines.
It's not UNIX without an adventure game.
Macro packages, miscellaneous tidbits.
8 System Utilities
Commands for the System Administrator.
Larger manuals explaining some commands in more detail.
(If you are new to Minix then try man hier, it will show you around the
file system and give you many pointers to other manual pages.)
By default, man will try the following files in a manual page directory
for the command man -s 1 ls:
Files in the man[1-8] directories are formatted with nroff -man. Those
in man9 are formatted with nroff -mnx. Files in the cat? directories are
preformatted. Files with names ending in .Z are decompressed first with
zcat (see compress(1)). The end result is presented to the user using a
pager if displaying on the screen.
For each manual page directory in its search path, man will first try all
the subdirectories of the manual page directory for the files above, and
then the directory itself. The directory /usr/man contains the standard
manual pages, with manual pages for optional packages installed in a
subdirectory of /usr/man, with the same structure as /usr/man. The
directory /usr/local/man contains manual pages for locally added
software. By default /usr/local/man is searched first, then /usr/man.
A title is not simply used as a filename, because several titles may
refer to the same manual page. Each manual page directory contains a
database of titles in the whatis(5) file that is created by makewhatis(1)
from the NAME sections of all the manual pages. A title is searched in
this database and the first title on a whatis line is used as a filename.
The options may be interspersed with the titles to search, and take
effect for the titles after them.
-a Show all the manual pages or one line descriptions with the given
title in all the specified sections in all the manual directories in
the search path. Normally only the first page found is shown.
-n Use nroff -man to format manual pages (default).
-t Use troff -man to format manual pages.
-f Use whatis(1) to show a one line description of the title from the
-k Use apropos(1) to show all the one line descriptions of the title
anywhere in the whatis(5) files (implies -a).
-q Quietly check if all requested manual pages exist. No output, no
errors, just an exit code.
Use path as the search path for manual directories.
Section is the section number the page is to be found in, or a comma
separated list of sections to use. Normally all sections are
searched. The search is always in numerical order no matter what
your section list looks like. A single digit is treated as a
section number without the -s for compatibility with BSD-style man
MANPATH This is a colon separated list of directories to search
for manual pages, by default /usr/local/man:/usr/man.
PAGER The program to use to display the manual page or one line
descriptions on the screen page by page. By default more.
/usr/man/whatis One of the whatis(5) databases.
nroff(1), troff(1), more(1), whatis(1), makewhatis(1), catman(1),
Kees J. Bot (email@example.com)