Tartalom
Adatok
Licenc:
Verziószám: 2.8.5 (Debian 10-ben)
Fejlesztő/tulajdonos:
Rövid leírás:
A whatis linux parancs manual oldala és súgója. Minden manual oldalon található egy rövid leírás. A whatis parancs a manual oldalak nevei közt keresve megjeleníti a talált név alapján a hozzá tartozó manual oldal rövid leírását.
Man oldal kimenet
man whatis
WHATIS(1) Manual pager utils WHATIS(1) NAME whatis - display one-line manual page descriptions SYNOPSIS whatis [-dlv?V] [-r|-w] [-s list] [-m system[,...]] [-M path] [-L locale] [-C file] name ... DESCRIPTION Each manual page has a short description available within it. whatis searches the manual page names and displays the manual page descriptions of any name matched. name may contain wildcards (-w) or be a regular expression (-r). Using these options, it may be necessary to quote the name or escape (\) the special characters to stop the shell from interpreting them. index databases are used during the search, and are updated by the mandb program. Depend‐ ing 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 installed. To produce an old style text whatis database from the relative index database, issue the command: whatis -M manpath -w '*' | sort > manpath/whatis where manpath is a manual page hierarchy such as /usr/man. OPTIONS -d, --debug Print debugging information. -v, --verbose Print verbose warning messages. -r, --regex Interpret each name as a regular expression. If a name matches any part of a page name, a match will be made. This option causes whatis to be somewhat slower due to the nature of database searches. -w, --wildcard Interpret each name as a pattern containing shell style wildcards. For a match to be made, an expanded name must match the entire page name. This option causes whatis to be somewhat slower due to the nature of database searches. -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 simple section, for example "3", then the dis‐ played list of descriptions will include pages in sections "3", "3perl", "3x", and so on; while if an entry in list has an extension, for example "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 names, they can be accessed using this option. To search NewOS's manual page names, use the option -m NewOS. The system specified can be a combination of comma delimited operating system names. To include a search of the native operating system's manual page names, in‐ clude 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 hierarchies to search. By default, whatis uses the $MANPATH environment variable, unless it is empty or un‐ set, in which case it will determine an appropriate manpath based on your $PATH en‐ vironment variable. This option overrides the contents of $MANPATH. -L locale, --locale=locale whatis will normally determine your current locale by a call to the C function set‐ locale(3) which interrogates various environment variables, possibly including $LC_MESSAGES and $LANG. To temporarily override the determined value, use this op‐ tion to supply a locale string directly to whatis. Note that it will not take ef‐ fect 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 ~/.manpath. -?, --help Print a help message and exit. --usage Print a short usage message and exit. -V, --version Display version information. EXIT STATUS 0 Successful program execution. 1 Usage, syntax or configuration file error. 2 Operational error. 16 Nothing was found that matched the criteria specified. ENVIRONMENT SYSTEM If $SYSTEM is set, it will have the same effect as if it had been specified as the argument to the -m option. MANPATH If $MANPATH is set, its value is interpreted as the colon-delimited manual page hi‐ erarchy search path to use. MANWIDTH If $MANWIDTH is set, its value is used as the terminal width (see the --long op‐ tion). 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. FILES /usr/share/man/index.(bt|db|dir|pag) A traditional global index database cache. /var/cache/man/index.(bt|db|dir|pag) An FHS compliant global index database cache. /usr/share/man/.../whatis A traditional whatis text database. SEE ALSO apropos(1), man(1), mandb(8) AUTHOR Wilf. (G.Wilford@ee.surrey.ac.uk). Fabrizio Polacco (fpolacco@debian.org). Colin Watson (cjwatson@debian.org). 2.8.5 2019-01-05 WHATIS(1)
Súgó kimenet
whatis --help
Használat: whatis [KAPCSOLÓ…] KEYWORD... -d, --debug emit debugging messages -v, --verbose print verbose warning messages -r, --regex interpret each keyword as a regex -w, --wildcard the keyword(s) contain wildcards -l, --long do not trim output to terminal width -C, --config-file=FILE use this user configuration file -L, --locale=LOCALE define the locale for this search -m, --systems=SYSTEM use manual pages from other systems -M, --manpath=PATH set search path for manual pages to PATH -s, --sections=LIST, --section=LIST search only these sections (colon-separated) -?, --help ezen súgószöveg megjelenítése --usage rövid használati utasítás megjelenítése -V, --version a programverzió kiírása Ha egy hosszú kapcsolóhoz kötelező vagy opcionális argumentumot megadni, akkor ez a megfelelő rövid kapcsolónál is kötelező vagy opcionális. A hibák itt jelenthetők: cjwatson@debian.org.
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