look(1) — Справочная страница Linux

LOOK(1)                       User Commands                      LOOK(1)

ИМЯ

       look - display lines beginning with a given string

СИНТАКСИС

       look [options] string [file]

ОПИСАНИЕ

       The look utility displays any lines in file which contain string
       as a prefix. As look performs a binary search, the lines in file
       must be sorted (where sort(1) was given the same options -d
       and/or -f that look is invoked with).

       If file is not specified, the file /usr/share/dict/words is used,
       only alphanumeric characters are compared and the case of
       alphabetic characters is ignored.

ПАРАМЕТРЫ

       -a, --alternative
           Use the alternative dictionary file.

       -d, --alphanum
           Use normal dictionary character set and order, i.e., only
           blanks and alphanumeric characters are compared. This is on
           by default if no file is specified.

           Note that blanks have been added to dictionary character set
           for compatibility with sort -d command since version 2.28.

       -f, --ignore-case
           Ignore the case of alphabetic characters. This is on by
           default if no file is specified.

       -t, --terminate character
           Specify a string termination character, i.e., only the
           characters in string up to and including the first occurrence
           of character are compared.

       -h, --help
           Display help text and exit.

       -V, --version
           Print version and exit.

       The look utility exits 0 if one or more lines were found and
       displayed, 1 if no lines were found, and >1 if an error occurred.

ОКРУЖЕНИЕ

       WORDLIST
           Path to a dictionary file. The environment variable has
           greater priority than the dictionary path defined in the
           FILES segment.

ФАЙЛЫ

       /usr/share/dict/words
           the dictionary

       /usr/share/dict/web2
           the alternative dictionary

ИСТОРИЯ

       The look utility appeared in Version 7 AT&T Unix.

ПРИМЕРЫ

           sort -d /etc/passwd -o /tmp/look.dict
           look -t: root:foobar /tmp/look.dict

СМОТРИ ТАКЖЕ

       grep(1), sort(1)

СООБЩЕНИЕ ОБ ОШИБКАХ

       For bug reports, use the issue tracker at
       https://github.com/util-linux/util-linux/issues.

ДОСТУПНОСТЬ

       The look command is part of the util-linux package which can be
       downloaded from Linux Kernel Archive
       <https://www.kernel.org/pub/linux/utils/util-linux/>. This page
       is part of the util-linux (a random collection of Linux
       utilities) project. Information about the project can be found at
       ⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have
       a bug report for this manual page, send it to
       util-linux@vger.kernel.org. This page was obtained from the
       project's upstream Git repository
       ⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on
       2024-06-14. (At that time, the date of the most recent commit
       that was found in the repository was 2024-06-10.) If you discover
       any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page,
       or you have corrections or improvements to the information in
       this COLOPHON (which is not part of the original manual page),
       send a mail to man-pages@man7.org

util-linux 2.39.594-1e0ad      2023-07-19                        LOOK(1)