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Command: look | Section: 1 | Source: NetBSD | File: look.1
LOOK(1) FreeBSD General Commands Manual LOOK(1)
NAME
look - display lines beginning with a given string
SYNOPSIS
look [-df] [-t termchar] string [file]
DESCRIPTION
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.
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:
-d Dictionary character set and order, i.e. only alphanumeric
characters are compared.
-f Ignore the case of alphabetic characters.
-t Specify a string termination character, i.e. only the characters
in string up to and including the first occurrence of termchar
are compared.
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.
FILES
/usr/share/dict/words the dictionary
COMPATIBILITY
The original manual page stated that tabs and blank characters
participated in comparisons when the -d option was specified. This was
incorrect and the current man page matches the historic implementation.
SEE ALSO
grep(1), sort(1)
HISTORY
look appeared in Version 7 AT&T UNIX.
FreeBSD 14.1-RELEASE-p8 June 14, 1993 FreeBSD 14.1-RELEASE-p8