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APROPOS(1)                    Manual pager utils                    APROPOS(1)

       apropos - search the manual page names and descriptions

       apropos  [-dalv?V] [-e|-w|-r] [-s list] [-m system[,...]] [-M path] [-L
       locale] [-C file] keyword ...

       Each manual page has a short description available within it.   apropos
       searches the descriptions for instances of keyword.

       keyword  is  usually  a regular expression, as if (-r) was used, or may
       contain wildcards (-w), or match the exact keyword (-e).   Using  these
       options,  it  may  be  necessary to quote the keyword or escape (\) the
       special characters to stop the shell from interpreting them.

       The standard matching rules allow matches to be made against  the  page
       name and word boundaries in the description.

       The  database  searched  by  apropos  is  updated by the mandb program.
       Depending on your installation, this may be run by a periodic cron job,
       or  may  need  to  be  run  manually  after  new manual pages have been

       -d, --debug
              Print debugging information.

       -v, --verbose
              Print verbose warning messages.

       -r, --regex
              Interpret each keyword as a regular  expression.   This  is  the
              default  behaviour.   Each  keyword  will be matched against the
              page names and the descriptions independently.  It can match any
              part of either.  The match is not limited to word boundaries.

       -w, --wildcard
              Interpret each keyword as a pattern containing shell style wild-
              cards.  Each keyword will be matched against the page names  and
              the  descriptions  independently.   If  --exact  is also used, a
              match will only be found  if  an  expanded  keyword  matches  an
              entire  description or page name.  Otherwise the keyword is also
              allowed to match on word boundaries in the description.

       -e, --exact
              Each keyword will be exactly matched against the page names  and
              the descriptions.

       -a, --and
              Only  display  items  that match all the supplied keywords.  The
              default is to display items that match any keyword.

       -l, --long
              Do not trim output to the terminal width.  Normally, output will
              be  truncated  to  the terminal width to avoid ugly results from
              poorly-written NAME sections.

       -s list, --sections list, --section list
              Search only the given manual sections.   list  is  a  colon-  or
              comma-separated list of sections.  If an entry in list is a sim-
              ple section,  for  example  "3",  then  the  displayed  list  of
              descriptions  will include pages in sections "3", "3perl", "3x",
              and so on; while if an entry in list has an extension, for exam-
              ple "3perl", then the list will only include pages in that exact
              part of the manual section.

       -m system[,...], --systems=system[,...]
              If this system has access to  other  operating  system's  manual
              page  descriptions,  they can be searched using this option.  To
              search NewOS's manual  page  descriptions,  use  the  option  -m

              The  system  specified  can  be a combination of comma-delimited
              operating system names.  To include a search of the native oper-
              ating  system's whatis descriptions, include the system name man
              in the argument string.  This option will override  the  $SYSTEM
              environment variable.

       -M path, --manpath=path
              Specify  an alternate set of colon-delimited manual page hierar-
              chies to search.  By default, apropos uses the $MANPATH environ-
              ment  variable,  unless  it  is empty or unset, in which case it
              will determine an appropriate manpath based on your $PATH  envi-
              ronment  variable.   This option overrides the contents of $MAN-

       -L locale, --locale=locale
              apropos will normally determine your current locale by a call to
              the  C function setlocale(3) which interrogates various environ-
              ment variables, possibly including $LC_MESSAGES and  $LANG.   To
              temporarily  override  the  determined value, use this option to
              supply a locale string directly to apropos.  Note that  it  will
              not  take  effect  until  the  search for pages actually begins.
              Output such as the help message will always be displayed in  the
              initially determined locale.

       -C file, --config-file=file
              Use  this  user  configuration  file  rather than the default of

       -?, --help
              Print a help message and exit.

              Print a short usage message and exit.

       -V, --version
              Display version information.

       0      Successful program execution.

       1      Usage, syntax or configuration file error.

       2      Operational error.

       16     Nothing was found that matched the criteria specified.

       SYSTEM If $SYSTEM is set, it will have the same effect  as  if  it  had
              been specified as the argument to the -m option.

              If $MANPATH is set, its value is interpreted as the colon-delim-
              ited manual page hierarchy search path to use.

              If $MANWIDTH is set, its value is used  as  the  terminal  width
              (see  the  --long option).  If it is not set, the terminal width
              will be calculated using the value of $COLUMNS, an  ioctl(2)  if
              available, or falling back to 80 characters if all else fails.

              If  $POSIXLY_CORRECT  is  set, even to a null value, the default
              apropos search will be as an  extended  regex  (-r).   Nowadays,
              this is the default behaviour anyway.

              A traditional global index database cache.

              An FHS compliant global index database cache.

              A traditional whatis text database.

       man(1), whatis(1), mandb(8)

       Wilf. (
       Fabrizio Polacco (
       Colin Watson (                           2014-09-28                        APROPOS(1)

Czas wygenerowania: 0.00053 sek.

Created with the man page lookup class by Andrew Collington.
Based on a C man page viewer by Vadim Pavlov
Unicode soft-hyphen fix (as used by RedHat) by Dan Edwards
Some optimisations by Eli Argon
Caching idea and code contribution by James Richardson

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