look - displays lines beginning with a given prefix

look displays all lines in the sorted file arguments that begin with the given prefix prefix onto the standard output. The results are unspecified if any file is not sorted. If max-prefix is specified then then records matching prefixes in the inclusive range prefix..max-prefix are displayed.

If file is not specified, look uses the file /usr/dict/words and enables --dictionary and --ignorecase .

-d, --dictionary

`Phone dictionary order': only letters, digits, and white space characters are significant in string comparisons.

-f, --fold|ignorecase

The search is case insensitive.

-h, --header

Skip flat file header (all lines up to first blank line.)

0

The specified prefix was found in the file.

1

The specified prefix was not found in the file.

>1

An error occurred.

grep(1), sort(1)

version

look (AT&T Research) 2008-02-14

author

Glenn Fowler <gsf@research.att.com>

author

David Korn <dgk@research.att.com>

copyright

Copyright © 1992-2012 AT&T Intellectual Property

license

http://www.eclipse.org/org/documents/epl-v10.html