Provided by: man-db_2.12.0-4build2_amd64 bug

NAVN

       man - an interface to the system reference manuals

SYNOPSIS

       man [man options] [[section] page ...] ...
       man -k [apropos options] regexp ...
       man -K [man options] [section] term ...
       man -k [apropos tilvalg] regexp ...
       man -l [man options] file ...
       man -w|-W [man options] page ...

BESKRIVELSE

       man is the system's manual pager.  Each page argument given to man is normally the name of
       a program, utility or function.  The manual page associated with each of  these  arguments
       is then found and displayed.  A section, if provided, will direct man to look only in that
       section of the manual.  The default action is to search in all of the  available  sections
       following  a pre-defined order (see DEFAULTS), and to show only the first page found, even
       if page exists in several sections.

       Tabellen nedenfor viser section-antallet af manualen  efterfulgt  af  typen  af  sider  de
       indeholder.

       1   Kørbare programmer eller skalkommandoer
       2   Systemkald (funktioner stillet til rådighed af kernen)
       3   Bibliotekskald (funktioner i programbiblioteker)
       4   Specielle filer (normalt fundet i /dev)
       5   File formats and conventions, e.g. /etc/passwd
       6   Spil
       7   Miscellaneous  (including  macro  packages  and  conventions),  e.g. man(7), groff(7),
           man-pages(7)
       8   Kommandoer til systemadministration (normalt kun for root)
       9   Kernerutiner [Ikkestandard]

       En manualside består af flere afsnit.

       Conventional section names include NAME, SYNOPSIS,  CONFIGURATION,  DESCRIPTION,  OPTIONS,
       EXIT STATUS,  RETURN VALUE,  ERRORS, ENVIRONMENT, FILES, VERSIONS, STANDARDS, NOTES, BUGS,
       EXAMPLE, AUTHORS, and SEE ALSO.

       De følgende konventioner gælder for afsnittet SYNOPSIS og kan bruges som en  vejledning  i
       andre afsnit.

       fed tekst      skriv præcis som vist.
       kursiv         erstat med passende argument.
       [-abc]         et eller alle argumenter inden i [ ] er valgfrie.
       -a|-b          tilvalg afgrænset af | kan ikke bruges sammen.
       argument ...   argument kan gentages.
       [udtryk] ...   hele udtrykket indenfor [ ] kan gentages.

       Præcis  optegning  kan  afhænge  af uddataenheden. For eksempel vil man normalt ikke kunne
       optegne kursiv når man befinder sig i en manual, og man vil normalt  bruge  understregning
       eller farvelagt tekst i stedet for.

       The  command  or  function  illustration  is  a  pattern  that  should  match all possible
       invocations.  In some cases it is advisable to illustrate several exclusive invocations as
       is shown in the SYNOPSIS section of this manual page.

EKSEMPLER

       man ls
           Vis manualsiden for punkt (program) ls.

       man man.7
           Display the manual page for macro package man from section 7.  (This is an alternative
           spelling of "man 7 man".)

       man 'man(7)'
           Display the manual page for macro package  man  from  section  7.   (This  is  another
           alternative  spelling  of  "man  7  man".   It may be more convenient when copying and
           pasting cross-references to manual pages.  Note that the parentheses must normally  be
           quoted to protect them from the shell.)

       man -a intro
           Vis,  i  rækkefølge,  alle de tilgængelige intro-manualsider indeholdt i denne manual.
           Det er muligt at afbryde mellem successive visninger eller udelade nogle af dem.

       man -t bash | lpr -Pps
           Format the manual page for bash into the default troff or groff format and pipe it  to
           the printer named ps.  The default output for groff is usually PostScript.  man --help
           should advise as to which processor is bound to the -t option.

       man -l -Tdvi ./foo.1x.gz > ./foo.1x.dvi
           This command will decompress and format the nroff source manual page ./foo.1x.gz  into
           a  device  independent (dvi) file.  The redirection is necessary as the -T flag causes
           output to be directed to stdout with no pager.  The output  could  be  viewed  with  a
           program  such  as  xdvi  or  further processed into PostScript using a program such as
           dvips.

       man -k printf
           Søg i de korte beskrivelser og navnene på  manualsiderne  for  nøgleordet  printf  som
           regulært udtryk. Udskriv resultaterne. Svarer til apropos printf.

       man -f smail
           Slå  manualsiderne  refereret  af smail op og vis den korte beskrivelse for det fundne
           resultat. Svarer til whatis smail.

OVERBLIK

       Mange tilvalg er tilgængelige for man for at give så meget fleksibilitet  som  muligt  for
       slutbrugeren.  Ændringer kan ske for søgestien, afsnitrækkefølge, uddataprocessor og anden
       opførsel og operationer detaljeret nedenfor.

       If set, various environment variables are interrogated to determine the operation of  man.
       It  is  possible  to  set  the  "catch-all" variable $MANOPT to any string in command line
       format, with the exception that any spaces used as part of an option's  argument  must  be
       escaped  (preceded  by  a  backslash).   man  will  parse $MANOPT prior to parsing its own
       command line.  Those options requiring an argument will be overridden by the same  options
       found  on  the  command  line.   To  reset  all  of  the options set in $MANOPT, -D can be
       specified as the initial command line option.  This will allow man to "forget"  about  the
       options specified in $MANOPT, although they must still have been valid.

       Manual  pages  are  normally  stored  in  nroff(1)   format  under  a  directory  such  as
       /usr/share/man.  In some installations, there  may  also  be  preformatted  cat  pages  to
       improve performance.  See manpath(5)  for details of where these files are stored.

       This  package  supports manual pages in multiple languages, controlled by your locale.  If
       your system did not set  this  up  for  you  automatically,  then  you  may  need  to  set
       $LC_MESSAGES,  $LANG,  or  another  system-dependent environment variable to indicate your
       preferred locale, usually specified in the POSIX format:

       <language>[_<territory>[.<tegnsæt>[,<version>]]]

       Hvis den ønskede side er tilgængelig i  dit  sprog,  vil  den  blive  vist  i  stedet  for
       standardsiden (normalt amerikansk-engelsk).

       If  you  find  that  the translations supplied with this package are not available in your
       native language and you would like to supply them, please contact the maintainer who  will
       be coordinating such activity.

       Individual  manual  pages  are  normally  written and maintained by the maintainers of the
       program, function, or other topic that they document,  and  are  not  included  with  this
       package.   If  you find that a manual page is missing or inadequate, please report that to
       the maintainers of the package in question.

       For information om andre funktioner og udvidelser tilgængelige med denne manualtekstviser,
       så læs venligst dokumenterne leveret med denne pakke.

STANDARDER

       The  order of sections to search may be overridden by the environment variable $MANSECT or
       by the SECTION directive in /etc/manpath.config.  By default it is as follows:

              1 n l 8 3 0 2 3type 3posix 3pm 3perl 3am 5 4 9 6 7

       The formatted manual page is displayed using a pager.  This can be specified in  a  number
       of ways, or else will fall back to a default (see option -P for details).

       Filtrene  tydes  vis  et  antal  metoder.  Først  tydes  kommandolinjetilvalget  -p  eller
       miljøvariablen $MANROFFSEQ. Hvis -p ikke blev brugt og miljøvariablen ikke var angivet, så
       fortolkes  opstartslinjen  for  nroff-filen  for en forbrænderstrenge. For at indeholde en
       gyldig forbrænderstreng, så skal den første linje ligne

       '\" <string>

       Hvor streng kan være enhver kombination af bogstaver beskrevet af tilvalget -p nedenfor.

       Hvis ingen af de ovenstående metoder giver filterinformation, så bruges et standardsæt.

       A formatting pipeline is formed from the filters  and  the  primary  formatter  (nroff  or
       [tg]roff  with  -t)  and executed.  Alternatively, if an executable program mandb_nfmt (or
       mandb_tfmt with -t)  exists in the man tree root, it is executed instead.  It gets  passed
       the  manual source file, the preprocessor string, and optionally the device specified with
       -T or -E as arguments.

TILVALG

       Non-argument options that are duplicated either on the command line, in $MANOPT, or  both,
       are not harmful.  For options that require an argument, each duplication will override the
       previous argument value.

   Generelle tilvalg
       -C fil, --config-file=fil
              Use this user configuration file rather than the default of ~/.manpath.

       -d, --debug
              Vis fejlsøgningsinformation.

       -D, --default
              Dette tilvalg udstedes normalt som det første tilvalg og nulstiller man's  opførsel
              til  standarden.  Dets  brug  er at nulstille disse tilvalg, som måske er angivet i
              $MANOPT. Ethvert tilvalg som følger -D vil have deres normale effekt.

       --warnings[=advarsler]
              Enable warnings from groff.  This may be used  to  perform  sanity  checks  on  the
              source  text of manual pages.  warnings is a comma-separated list of warning names;
              if it is not supplied, the default is "mac".  To disable a groff warning, prefix it
              with "!": for example, --warnings=mac,!break enables warnings in the "mac" category
              and disables warnings in the "break" category.  See the  “Warnings”  node  in  info
              groff for a list of available warning names.

   Hovedtilstande for operation
       -f, --whatis
              Approximately  equivalent  to  whatis.  Display a short description from the manual
              page, if available.  See whatis(1)  for details.

       -k, --apropos
              Approximately equivalent to apropos.  Search the short manual page descriptions for
              keywords and display any matches.  See apropos(1)  for details.

       -K, --global-apropos
              Search  for  text in all manual pages.  This is a brute-force search, and is likely
              to take some time; if you can, you should specify a section to reduce the number of
              pages  that need to be searched.  Search terms may be simple strings (the default),
              or regular expressions if the --regex option is used.

              Note that this searches the sources of the manual pages, not the rendered text, and
              so  may  include  false  positives  due to things like comments in source files, or
              false negatives due to things like hyphens being written as "\-" in  source  files.
              Searching the rendered text would be much slower.

       -l, --local-file
              Activate  "local" mode.  Format and display local manual files instead of searching
              through the  system's  manual  collection.   Each  manual  page  argument  will  be
              interpreted  as  an  nroff  source  file  in  the  correct  format.  No cat file is
              produced.  If '-' is listed as one of the  arguments,  input  will  be  taken  from
              stdin.

              If  this  option  is  not used, then man will also fall back to interpreting manual
              page arguments as local file names if the argument contains a "/" character,  since
              that is a good indication that the argument refers to a path on the file system.

       -w, --where, --path, --location
              Don't  actually  display  the  manual page, but do print the location of the source
              nroff file that would be formatted.  If the -a option is also used, then print  the
              locations of all source files that match the search criteria.

       -W, --where-cat, --location-cat
              Don't  actually  display  the  manual  page,  but  do  print  the  location  of the
              preformatted cat file that would be displayed.  If the -a option is also used, then
              print the locations of all preformatted cat files that match the search criteria.

              If -w and -W are both used, then print both source file and cat file separated by a
              space.  If all of -w, -W, and -a are used, then do this for each possible match.

       -c, --catman
              Dette tilvalg er ikke for generel brug og bør kun bruges af programmet catman.

       -R kodning, --recode=kodning
              Instead of formatting the manual page in the usual way, output its source converted
              to  the  specified  encoding.  If you already know the encoding of the source file,
              you can also use manconv(1)  directly.  However, this option allows you to  convert
              several  manual  pages  to a single encoding without having to explicitly state the
              encoding of each, provided that they were already installed in a structure  similar
              to a manual page hierarchy.

              Consider  using  man-recode(1)  instead for converting multiple manual pages, since
              it has an interface designed for bulk conversion and so can be much faster.

   Finde manualsider
       -L sprog, --locale=sprog
              man  vil  normalt  bestemme  dit  lokale  sprog  med  et  kald   til   C-funktionen
              setlocale(3),   som   undersøger   diverse   miljøvariabler,   muligvis   inklusive
              $LC_MESSAGES og $LANG. For midlertidigt at overskrive den  afslørede  værdi  bruges
              dette  tilvalg  til at supplere en sprog-streng direkte til man. Bemærk at det ikke
              vil træde i kraft før søgningen efter sider rent faktisk begynder. Resultatet såsom
              hjælpebeskeden vil altid blive vist i det oprindeligt bestemte sprog.

       -m system[,...], --systems=system[,...]
              If  this  system  has  access to other operating systems' manual pages, they can be
              accessed using this option.  To search for a manual page from NewOS's  manual  page
              collection, use the option -m NewOS.

              Det angivet system kan være en kombination af kommaadskilt operativsystemnavne. For
              at  inkludere  en  søgning  i  manualsiderne  for  udgangspunktets   operativsystem
              inkluderes  systemnavnet  man  i  argumentstrengen.  Dette  tilvalg  vil overskrive
              miljøvariablen $SYSTEM.

       -M sti, --manpath=sti
              Angiv en alternativ manualsti. Som standard bruger man manpath-afledt kode  til  at
              bestemme  søgestien.  Dette tilvalg overskriver miljøvariablen $MANPATH og medfører
              at tilvalget -m ignoreres.

              A path specified as a  manpath  must  be  the  root  of  a  manual  page  hierarchy
              structured  into sections as described in the man-db manual (under "The manual page
              system").  To view manual pages outside such hierarchies, see the -l option.

       -S list, -s list, --sections=list
              The given list is a colon- or comma-separated list of sections, used  to  determine
              which  manual  sections  to  search  and  in what order.  This option overrides the
              $MANSECT environment variable.  (The -s spelling is for compatibility  with  System
              V.)

       -e sub-extension, --extension=sub-extension
              Some  systems  incorporate  large  packages  of  manual  pages,  such as those that
              accompany the Tcl package, into the main manual page hierarchy.  To get around  the
              problem  of  having  two  manual  pages with the same name such as exit(3), the Tcl
              pages were usually all assigned to section l.  As this is unfortunate,  it  is  now
              possible  to  put  the  pages  in  the  correct  section,  and to assign a specific
              "extension" to them, in this case, exit(3tcl).  Under normal  operation,  man  will
              display  exit(3)   in preference to exit(3tcl).  To negotiate this situation and to
              avoid having to know which section the page you  require  resides  in,  it  is  now
              possible  to give man a sub-extension string indicating which package the page must
              belong to.  Using the above example,  supplying  the  option  -e tcl  to  man  will
              restrict the search to pages having an extension of *tcl.

       -i, --ignore-case
              Ignore case when searching for manual pages.  This is the default.

       -I, --match-case
              Search for manual pages case-sensitively.

       --regex
              Show  all  pages with any part of either their names or their descriptions matching
              each page argument as a regular expression, as with  apropos(1).   Since  there  is
              usually  no  reasonable  way  to  pick  a  "best" page when searching for a regular
              expression, this option implies -a.

       --wildcard
              Show all pages with any part of either their names or their  descriptions  matching
              each  page  argument  using  shell-style wildcards, as with apropos(1)  --wildcard.
              The page argument must match the entire name  or  description,  or  match  on  word
              boundaries  in the description.  Since there is usually no reasonable way to pick a
              "best" page when searching for a wildcard, this option implies -a.

       --names-only
              Hvis enten tilvalget --regex eller --wildcard bruges,  match  kun  sidenavne,  ikke
              sidebeskrivelser, som med whatis(1). Ellers, ingen effekt.

       -a, --all
              Som  standard  vil  man  afslutte  efter  visning  af den mest egnet manualside den
              finder. Brug af dette tilvalg tvinger man til at vise alle manualsiderne med  navne
              som matcher søgekriteriet.

       -u, --update
              This  option  causes  man  to update its database caches of installed manual pages.
              This is only needed in rare situations, and it is normally better to  run  mandb(8)
              instead.

       --no-subpages
              By  default,  man  will  try  to  interpret pairs of manual page names given on the
              command line as equivalent to a single manual page name containing a hyphen  or  an
              underscore.   This  supports the common pattern of programs that implement a number
              of subcommands, allowing them to provide manual pages for each that can be accessed
              using  similar  syntax  as would be used to invoke the subcommands themselves.  For
              example:

                $ man -aw git diff
                /usr/share/man/man1/git-diff.1.gz

              For at deaktivere denne opførsel så brug tilvalget --no-subpages.

                $ man -aw --no-subpages git diff
                /usr/share/man/man1/git.1.gz
                /usr/share/man/man3/Git.3pm.gz
                /usr/share/man/man1/diff.1.gz

   Kontrol af formateret resultat
       -P tekstviser, --pager=tekstviser
              Specify which output pager to use.  By default, man uses pager, falling back to cat
              if  pager  is  not found or is not executable.  This option overrides the $MANPAGER
              environment variable, which in turn overrides the $PAGER environment variable.   It
              is not used in conjunction with -f or -k.

              The  value  may  be  a simple command name or a command with arguments, and may use
              shell quoting (backslashes, single quotes, or double quotes).  It may not use pipes
              to  connect  multiple  commands;  if you need that, use a wrapper script, which may
              take the file to display either as an argument or on standard input.

       -r prompt, --prompt=prompt
              Hvis en nylig version af less bruges som tekstsøger, så vil man forsøge  at  angive
              den  på  sin prompt og vælge nogle fornuftige tilvalg. Standardprompten ser således
              ud

               Manualside navn(sec) line x

              hvor navn benvæner manualsidenavnet, sektion benævner  sektionen  den  blev  fundet
              under  og  x  det  nuværende  linjenummer.  Dette opnås ved at bruge miljøvariablen
              $LESS.

              Supplying -r with a string will override this default.  The string may contain  the
              text  $MAN_PN which will be expanded to the name of the current manual page and its
              section name surrounded by "(" and ")".  The string used  to  produce  the  default
              could be expressed as

              \ Manual\ page\ \$MAN_PN\ ?ltline\ %lt?L/%L.:
              byte\ %bB?s/%s..?\ (END):?pB\ %pB\\%..
              (tryk h for hjælp eller q for afslut)

              It  is  broken  into  three  lines  here for the sake of readability only.  For its
              meaning see the less(1)  manual page.  The prompt string is first evaluated by  the
              shell.   All  double  quotes,  back-quotes  and  backslashes  in the prompt must be
              escaped by a preceding backslash.  The prompt string may end in an escaped $  which
              may be followed by further options for less.  By default man sets the -ix8 options.

              The  $MANLESS  environment  variable  described  below may be used to set a default
              prompt string if none is supplied on the command line.

       -7, --ascii
              When viewing a pure ascii(7)  manual page on a 7 bit terminal or terminal emulator,
              some  characters  may  not  display  correctly  when  using  the  latin1(7)  device
              description with GNU nroff.  This option allows  pure  ascii  manual  pages  to  be
              displayed  in ascii with the latin1 device.  It will not translate any latin1 text.
              The following table shows the translations performed: some parts of it may only  be
              displayed properly when using GNU nroff's latin1(7)  device.

              Beskrivelse           Oktal   latin1   ascii
              ─────────────────────────────────────────────
              continuation hyphen    255      ‐        -

              bullet (middle dot)    267      •        o
              acute accent           264      ´        '
              multiplication sign    327      ×        x

              If  the  latin1  column  displays correctly, your terminal may be set up for latin1
              characters and this option is not necessary.  If the latin1 and ascii  columns  are
              identical,  you  are reading this page using this option or man did not format this
              page using the latin1 device description.  If  the  latin1  column  is  missing  or
              corrupt, you may need to view manual pages with this option.

              This  option is ignored when using options -t, -H, -T, or -Z and may be useless for
              nroff other than GNU's.

       -E kodning, --encoding=kodning
              Generate output for a character encoding other  than  the  default.   For  backward
              compatibility,  encoding  may  be an nroff device such as ascii, latin1, or utf8 as
              well as a true character encoding such as UTF-8.

       --no-hyphenation, --nh
              Normally, nroff will automatically hyphenate text at line breaks even in words that
              do  not  contain  hyphens,  if  it is necessary to do so to lay out words on a line
              without excessive spacing.  This option disables automatic  hyphenation,  so  words
              will only be hyphenated if they already contain hyphens.

              If  you are writing a manual page and simply want to prevent nroff from hyphenating
              a word at an inappropriate point, do not use this option,  but  consult  the  nroff
              documentation  instead;  for  instance,  you can put "\%" inside a word to indicate
              that it may be hyphenated at that point, or put "\%" at the  start  of  a  word  to
              prevent it from being hyphenated.

       --no-justification, --nj
              Normally,  nroff  will  automatically  justify  text  to both margins.  This option
              disables full justification, leaving justified only to the left  margin,  sometimes
              called "ragged-right" text.

              If  you  are writing a manual page and simply want to prevent nroff from justifying
              certain paragraphs, do not use this option, but  consult  the  nroff  documentation
              instead;  for  instance, you can use the ".na", ".nf", ".fi", and ".ad" requests to
              temporarily disable adjusting and filling.

       -p streng, --preprocessor=streng
              Specify the sequence of preprocessors to run before nroff or troff/groff.  Not  all
              installations will have a full set of preprocessors.  Some of the preprocessors and
              the letters used to designate them are: eqn (e), grap (g), pic (p), tbl (t), vgrind
              (v),  refer  (r).   This  option  overrides  the  $MANROFFSEQ environment variable.
              zsoelim is always run as the very first preprocessor.

       -t, --troff
              Brug groff -mandoc til at formatere manualsiden til standardud. Tilvalget  er  ikke
              krævet sammen med -H, -T eller -Z.

       -T[enhed], --troff-device[=enhed]
              Denne  indstilling  bruges til at ændre groff-resultater (eller muligvis troff'er),
              så de er egnet for en enhed  udover  standarden.  -t  er  underforstået.  Eksempler
              (indeholdt med Groff-1.17) inkluderer dvi, latin1, ps, utf8, X75 og X100.

       -H[browser], --html[=browser]
              This  option  will cause groff to produce HTML output, and will display that output
              in a web browser.  The choice of browser is  determined  by  the  optional  browser
              argument  if  one  is  provided,  by  the  $BROWSER  environment  variable, or by a
              compile-time default if that is unset (usually lynx).  This option implies -t,  and
              will only work with GNU troff.

       -X[dpi], --gxditview[=dpi]
              This  option displays the output of groff in a graphical window using the gxditview
              program.  The dpi (dots per inch) may be 75, 75-12, 100, or 100-12,  defaulting  to
              75;  the  -12  variants  use a 12-point base font.  This option implies -T with the
              X75, X75-12, X100, or X100-12 device respectively.

       -Z, --ditroff
              groff vil køre troff og så bruge en passende  efterbrænder  til  at  fremstille  et
              resultat  egnet  for  den  valgte  enhed. Hvis groff -mandoc er groff, så vil dette
              tilvalg sendes til groff og vil  undertrykke  brugen  af  en  efterbrænder.  -t  er
              underforstået.

    hjælp
       -?, --help
              Vis en hjælpebesked og afslut.

       --usage
              Vis en kort hjælpebesked og afslut.

       -V, --version
              Vis versionsinformation.

AFSLUT-STATUS

       0      Programkørsel endt uden fejl.

       1      Brugs-, syntaks- eller konfigurationsfilfejl.

       2      Operationel fejl.

       3      En underproces returnerede en afslutningsstatus forskellig fra nul.

       16     Mindst en af siderne/filerne/nøgleordene fandtes ikke eller blev ikke matchet.

MILJØ

       MANPATH
              If $MANPATH is set, its value is used as the path to search for manual pages.

              See the SEARCH PATH section of manpath(5)  for the default behaviour and details of
              how this environment variable is handled.

       MANROFFOPT
              Every time man invokes the formatter (nroff, troff, or groff), it adds the contents
              of $MANROFFOPT to the formatter's command line.

       MANROFFSEQ
              If  $MANROFFSEQ  is set, its value is used to determine the set of preprocessors to
              pass each manual page through.  The default preprocessor list is system dependent.

       MANSECT
              If $MANSECT is set, its value is a colon-delimited list of sections and it is  used
              to  determine which manual sections to search and in what order.  The default is "1
              n l 8 3 0 2 3type 3posix 3pm 3perl 3am 5 4 9 6 7", unless overridden by the SECTION
              directive in /etc/manpath.config.

       MANPAGER, PAGER
              If  $MANPAGER or $PAGER is set ($MANPAGER is used in preference), its value is used
              as the name of the program used to display the manual page.  By default,  pager  is
              used, falling back to cat if pager is not found or is not executable.

              The  value  may  be  a simple command name or a command with arguments, and may use
              shell quoting (backslashes, single quotes, or double quotes).  It may not use pipes
              to  connect  multiple  commands;  if you need that, use a wrapper script, which may
              take the file to display either as an argument or on standard input.

       MANLESS
              If $MANLESS is set, its value will be used as the default  prompt  string  for  the
              less pager, as if it had been passed using the -r option (so any occurrences of the
              text $MAN_PN will be expanded in the same way).  For example, if you  want  to  set
              the   prompt  string  unconditionally  to  “my  prompt  string”,  set  $MANLESS  to
              ‘-Psmy prompt string’.  Using the -r option overrides this environment variable.

       BROWSER
              If $BROWSER is set, its value is a colon-delimited list of commands, each of  which
              in  turn is used to try to start a web browser for man --html.  In each command, %s
              is replaced by a filename containing the HTML output from groff, %% is replaced  by
              a single percent sign (%), and %c is replaced by a colon (:).

       SYSTEM Hvis  $SYSTEM  er  angivet,  vil det have den samme effekt, som hvis den var blevet
              angivet som argument for tilvalget -m.

       MANOPT If $MANOPT is set, it will be parsed prior to man's command line and is expected to
              be in a similar format.  As all of the other man specific environment variables can
              be expressed as command line options, and are thus candidates for being included in
              $MANOPT  it  is  expected  that  they  will become obsolete.  N.B.  All spaces that
              should be interpreted as part of an option's argument must be escaped.

       MANWIDTH
              If $MANWIDTH is set, its value is used as the line length for  which  manual  pages
              should  be formatted.  If it is not set, manual pages will be formatted with a line
              length appropriate to the current  terminal  (using  the  value  of  $COLUMNS,  and
              ioctl(2)   if available, or falling back to 80 characters if neither is available).
              Cat pages will only be saved when the default formatting can be used, that is  when
              the terminal line length is between 66 and 80 characters.

       MAN_KEEP_FORMATTING
              Normally,  when  output is not being directed to a terminal (such as to a file or a
              pipe), formatting characters are discarded to make it easier  to  read  the  result
              without  special  tools.   However, if $MAN_KEEP_FORMATTING is set to any non-empty
              value, these formatting characters are retained.  This may be useful  for  wrappers
              around man that can interpret formatting characters.

       MAN_KEEP_STDERR
              Normally,  when  output  is  being directed to a terminal (usually to a pager), any
              error output from the command used to produce formatted versions of manual pages is
              discarded  to  avoid  interfering with the pager's display.  Programs such as groff
              often produce relatively minor error messages about typographical problems such  as
              poor  alignment,  which  are unsightly and generally confusing when displayed along
              with the manual page.  However,  some  users  want  to  see  them  anyway,  so,  if
              $MAN_KEEP_STDERR  is  set to any non-empty value, error output will be displayed as
              usual.

       MAN_DISABLE_SECCOMP
              On Linux, man normally confines subprocesses that handle  untrusted  data  using  a
              seccomp(2)   sandbox.   This  makes  it  safer  to  run  complex  parsing code over
              arbitrary manual pages.  If this goes  wrong  for  some  reason  unrelated  to  the
              content  of  the  page  being  displayed,  you  can set $MAN_DISABLE_SECCOMP to any
              non-empty value to disable the sandbox.

       PIPELINE_DEBUG
              If the $PIPELINE_DEBUG environment variable is set to  "1",  then  man  will  print
              debugging messages to standard error describing each subprocess it runs.

       LANG, LC_MESSAGES
              Afhængig  af  system  og  implementering,  vil  enten  en  af  eller begge $LANG og
              $LC_MESSAGES blive spurgt for den  aktuelle  beskeds  sprog.   man  vil  vise  dets
              beskeder  i  det  sprog  (hvis  tilgængeligt).  Se  setlocale(3) for mere udførlige
              detaljer.

FILER

       /etc/manpath.config
              konfigurationsfil for man-db.

       /usr/share/man
              Et globalt manualsidehierarki.

STANDARDS

       POSIX.1-2001, POSIX.1-2008, POSIX.1-2017.

SE OGSÅ

       apropos(1), groff(1), less(1),  manpath(1),  nroff(1),  troff(1),  whatis(1),  zsoelim(1),
       manpath(5), man(7), catman(8), mandb(8)

       Documentation  for  some  packages  may be available in other formats, such as info(1)  or
       HTML.

HISTORIK

       1990, 1991 – oprindelig skrevet af John W. Eaton (jwe@che.utexas.edu).

       23. dec 1992: Rik  Faith  (faith@cs.unc.edu)  anvendte  fejlrettelser  af  Willem  Kasdorp
       (wkasdo@nikhefk.nikef.nl).

       30th  April  1994  –  23rd  February  2000:  Wilf.  (G.Wilford@ee.surrey.ac.uk)  has  been
       developing and maintaining this package with the help of a few dedicated people.

       30. oktober 1996 – 30. marts 2001: Fabrizio Polacco <fpolacco@debian.org> vedligeholdte og
       forberedte denne pakke for Debianprojektet med hjælp fra hele fællesskabet.

       31.  marts  2001 – til i dag: Colin Watson <cjwatson@debian.org> udvikler og vedligeholder
       nu man-db.

FEJL

       https://gitlab.com/man-db/man-db/-/issues
       https://savannah.nongnu.org/bugs/?group=man-db