117 lines
3.9 KiB
Plaintext
117 lines
3.9 KiB
Plaintext
//po4a: entry man manual
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////
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Copyright (c) 1990, 1993
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The Regents of the University of California. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. All advertising materials mentioning features or use of this software
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must display the following acknowledgement:
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This product includes software developed by the University of
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California, Berkeley and its contributors.
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4. Neither the name of the University nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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@(#)look.1 8.1 (Berkeley) 6/14/93
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////
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= look(1)
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:doctype: manpage
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:man manual: User Commands
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:man source: util-linux {release-version}
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:page-layout: base
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:command: look
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== NAME
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look - display lines beginning with a given string
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== SYNOPSIS
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*look* [options] _string_ [_file_]
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== DESCRIPTION
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The *look* utility displays any lines in _file_ which contain _string_. 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).
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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.
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== OPTIONS
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*-a*, *--alternative*::
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Use the alternative dictionary file.
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*-d*, *--alphanum*::
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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.
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+
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Note that blanks have been added to dictionary character set for compatibility with *sort -d* command since version 2.28.
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*-f*, *--ignore-case*::
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Ignore the case of alphabetic characters. This is on by default if no file is specified.
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*-t*, *--terminate* _character_::
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Specify a string termination character, i.e., only the characters in _string_ up to and including the first occurrence of _character_ are compared.
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*-V*, *--version*::
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Display version information and exit.
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*-h*, *--help*::
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Display help text and exit.
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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.
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== ENVIRONMENT
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*WORDLIST*::
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Path to a dictionary file. The environment variable has greater priority than the dictionary path defined in FILES segment.
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== FILES
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_/usr/share/dict/words_::
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the dictionary
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_/usr/share/dict/web2_::
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the alternative dictionary
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== HISTORY
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The *look* utility appeared in Version 7 AT&T Unix.
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== EXAMPLES
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....
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sort -d /etc/passwd -o /tmp/look.dict
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look -t: root:foobar /tmp/look.dict
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....
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== SEE ALSO
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*grep*(1),
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*sort*(1)
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include::man-common/bugreports.adoc[]
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include::man-common/footer.adoc[]
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ifdef::translation[]
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include::man-common/translation.adoc[]
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endif::[]
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