Annotation of src/usr.bin/look/look.1, Revision 1.12
1.12 ! jmc 1: .\" $OpenBSD: look.1,v 1.11 2007/05/31 19:20:12 jmc Exp $
1.1 deraadt 2: .\" $NetBSD: look.1,v 1.3 1994/12/23 01:10:59 jtc Exp $
3: .\"
4: .\" Copyright (c) 1990, 1993
5: .\" The Regents of the University of California. All rights reserved.
6: .\"
7: .\" Redistribution and use in source and binary forms, with or without
8: .\" modification, are permitted provided that the following conditions
9: .\" are met:
10: .\" 1. Redistributions of source code must retain the above copyright
11: .\" notice, this list of conditions and the following disclaimer.
12: .\" 2. Redistributions in binary form must reproduce the above copyright
13: .\" notice, this list of conditions and the following disclaimer in the
14: .\" documentation and/or other materials provided with the distribution.
1.9 millert 15: .\" 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 16: .\" may be used to endorse or promote products derived from this software
17: .\" without specific prior written permission.
18: .\"
19: .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20: .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23: .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: .\" SUCH DAMAGE.
30: .\"
31: .\" @(#)look.1 8.1 (Berkeley) 6/14/93
32: .\"
1.12 ! jmc 33: .Dd $Mdocdate: May 31 2007 $
1.1 deraadt 34: .Dt LOOK 1
35: .Os
36: .Sh NAME
37: .Nm look
38: .Nd display lines beginning with a given string
39: .Sh SYNOPSIS
40: .Nm look
41: .Op Fl df
42: .Op Fl t Ar termchar
43: .Ar string
44: .Op Ar file
45: .Sh DESCRIPTION
1.4 aaron 46: The
47: .Nm
1.1 deraadt 48: utility displays any lines in
49: .Ar file
50: which contain
51: .Ar string
52: as a prefix.
53: As
1.4 aaron 54: .Nm
1.1 deraadt 55: performs a binary search, the lines in
56: .Ar file
57: must be sorted.
58: .Pp
59: If
60: .Ar file
61: is not specified, the file
62: .Pa /usr/share/dict/words
1.8 aaron 63: is used.
64: Only alphanumeric characters are compared and the case of
1.1 deraadt 65: alphabetic characters is ignored.
66: .Pp
1.6 aaron 67: The options are as follows:
1.1 deraadt 68: .Bl -tag -width Ds
69: .It Fl d
1.8 aaron 70: Dictionary character set and order, i.e., only alphanumeric characters
1.1 deraadt 71: are compared.
72: .It Fl f
73: Ignore the case of alphabetic characters.
1.3 aaron 74: .It Fl t Ar termchar
1.8 aaron 75: Specify a string termination character, i.e., only the characters
1.1 deraadt 76: in
77: .Ar string
78: up to and including the first occurrence of
79: .Ar termchar
80: are compared.
81: .El
82: .Sh FILES
83: .Bl -tag -width /usr/share/dict/words -compact
84: .It Pa /usr/share/dict/words
85: the dictionary
86: .El
1.12 ! jmc 87: .Sh EXIT STATUS
! 88: The
! 89: .Nm
! 90: utility exits 0 if one or more lines were found and displayed,
! 91: 1 if no lines were found, or \*(Gt1 if an error occurred.
1.1 deraadt 92: .Sh SEE ALSO
93: .Xr grep 1 ,
94: .Xr sort 1
1.10 jmc 95: .Sh STANDARDS
1.1 deraadt 96: The original manual page stated that tabs and blank characters participated
97: in comparisons when the
98: .Fl d
99: option was specified.
100: This was incorrect and the current man page matches the historic
101: implementation.
102: .Sh HISTORY
1.7 aaron 103: The
1.4 aaron 104: .Nm
1.7 aaron 105: command appeared in
1.5 aaron 106: .At v7 .