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Linux 2.6 - man page for manpath (linux section 5)

MANPATH(5)			       /etc/manpath.config			       MANPATH(5)

       manpath - format of the /etc/manpath.config file

       The  manpath configuration file is used by the manual page utilities to assess users' man-
       paths at run time, to indicate which manual page hierarchies (manpaths) are to be  treated
       as system hierarchies and to assign them directories to be used for storing cat files.

       If  the	environment  variable  $MANPATH  is already set, the information contained within
       /etc/manpath.config will not override it.

       The following field types are currently recognised:

       # comment
	      Blank lines or those beginning with a # will be treated as comments and ignored.

       MANDATORY_MANPATH manpath_element
	      Lines of this form indicate manpaths that every  automatically  generated  $MANPATH
	      should contain.  This will typically include /usr/man.

       MANPATH_MAP path_element manpath_element
	      Lines  of this form set up $PATH to $MANPATH mappings.  For each path_element found
	      in the user's $PATH, manpath_element will be added to the $MANPATH.

       MANDB_MAP manpath_element [ catpath_element ]
	      Lines of this form indicate which manpaths are to be treated  as	system	manpaths,
	      and optionally where their cat files should be stored.  This field type is particu-
	      larly important if man is a setuid program, as (when in  the  system  configuration
	      file  /etc/manpath.config  rather than the per-user configuration file .manpath) it
	      indicates which manual page hierarchies to access as the setuid user and	which  as
	      the invoking user.

	      The  system  manual  page  hierarchies  are usually those stored under /usr such as
	      /usr/man, /usr/local/man and /usr/X11R6/man.

	      If cat pages from a particular manpath_element are not to be stored or  are  to  be
	      stored in the traditional location, catpath_element may be omitted.

	      Traditional  cat	placement  would  be impossible for read only mounted manual page
	      hierarchies and because of this it is possible to specify any valid directory hier-
	      archy  for  their  storage.  To observe the Linux FSSTND the keyword `FSSTND can be
	      used in place of an actual directory.

	      Unfortunately, it is necessary to specify all  system  man  tree	paths,	including
	      alternate operating system paths such as /usr/man/sun and any NLS locale paths such
	      as /usr/man/de_DE.88591.

	      As the information is parsed line by line in the order written, it is necessary for
	      any manpath that is a sub-hierarchy of another hierarchy to be listed first, other-
	      wise an incorrect match will be made.  An example is that /usr/man/de_DE.88591 must
	      come before /usr/man.

       DEFINE key value
	      Lines  of  this  form define miscellaneous configuration variables; see the default
	      configuration file for those variables used by the manual  pager	utilities.   They
	      include  default paths to various programs (such as grep and tbl), and default sets
	      of arguments to those programs.

       SECTION section ...
	      Lines of this form define the order in which manual sections  should  be	searched.
	      If there are no SECTION directives in the configuration file, the default is:

		     SECTION 1 n l 8 3 0 2 5 4 9 6 7

	      If multiple SECTION directives are given, their section lists will be concatenated.

	      If  a particular extension is not in this list (say, 1mh) it will be displayed with
	      the rest of the section it belongs to.  The effect of this is that you only need to
	      explicitly  list extensions if you want to force a particular order.  Sections with
	      extensions should usually be adjacent to their main section (e.g. "1 1mh 8 ...").

	      SECTIONS is accepted as an alternative name for this directive.

       MINCATWIDTH width
	      If the terminal width is less than width, cat pages will not be created  (if  miss-
	      ing) or displayed.  The default is 80.

       MAXCATWIDTH width
	      If  the  terminal  width	is  greater than width, cat pages will not be created (if
	      missing) or displayed.  The default is 80.

       CATWIDTH width
	      If width is non-zero, cat pages will always be formatted	for  a	terminal  of  the
	      given  width,  regardless  of  the width of the terminal actually being used.  This
	      should generally be within the range set by MINCATWIDTH and MAXCATWIDTH.

	      This flag prevents man(1) from creating cat pages automatically.

       Unless the rules above are followed and observed precisely,  the  manual  pager	utilities
       will not function as desired.  The rules are overly complicated. 				    2011-04-13				       MANPATH(5)

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