from small one page howto to huge articles all in one place
 

search text in:





Poll
Which kernel version do you use?





poll results

Last additions:
using iotop to find disk usage hogs

using iotop to find disk usage hogs

words:

887

views:

99371

userrating:

average rating: 1.7 (84 votes) (1=very good 6=terrible)


May 25th. 2007:
Words

486

Views

214516

why adblockers are bad


Workaround and fixes for the current Core Dump Handling vulnerability affected kernels

Workaround and fixes for the current Core Dump Handling vulnerability affected kernels

words:

161

views:

95560

userrating:

average rating: 1.3 (28 votes) (1=very good 6=terrible)


April, 26th. 2006:

Druckversion
You are here: manpages





LOOK

Section: User Commands (1)
Updated: June 2011
Index Return to Main Contents
 

NAME

look - display lines beginning with a given string  

SYNOPSIS

look [options] string [file]  

DESCRIPTION

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).

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.  

OPTIONS

-a, --alternative
Use the alternative dictionary file.
-d, --alphanum
Use normal dictionary character set and order, i.e. only alphanumeric characters are compared. (This is on by default if no file is specified.)
-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.
-V, --version
Display version information and exit.
-h, --help
Display help text 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.  

EXAMPLE

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

FILES

/usr/share/dict/words
the dictionary
/usr/share/dict/web2
the alternative dictionary
 

SEE ALSO

grep(1), sort(1)  

COMPATIBILITY

The original manual page stated that tabs and blank characters participated in comparisons when the --alphanum option was specified. This was incorrect, and the current man page matches the historic implementation.  

HISTORY

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

AVAILABILITY

The look command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLE
FILES
SEE ALSO
COMPATIBILITY
HISTORY
AVAILABILITY


Please read "Why adblockers are bad".



Other free services
toURL.org
Shorten long
URLs to short
links like
http://tourl.org/2
tourl.org
.
Reverse DNS lookup
Find out which hostname(s)
resolve to a
given IP or other hostnames for the server
www.reversednslookup.org
rdf newsfeed | rss newsfeed | Atom newsfeed
- Powered by LeopardCMS - Running on Gentoo -
Copyright 2004-2017 Sascha Nitsch Unternehmensberatung UG(haftungsbeschränkt)
Valid XHTML1.1 : Valid CSS : buttonmaker
- Level Triple-A Conformance to Web Content Accessibility Guidelines 1.0 -
- Copyright and legal notices -
Time to create this page: 3.5 ms