| 1 | .\" $NetBSD: look.1,v 1.3 1994/12/23 01:10:59 jtc Exp $ |
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| 2 | .\" |
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| 3 | .\" Copyright (c) 1990, 1993 |
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| 4 | .\" The Regents of the University of California. All rights reserved. |
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| 5 | .\" |
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| 6 | .\" Redistribution and use in source and binary forms, with or without |
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| 7 | .\" modification, are permitted provided that the following conditions |
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| 8 | .\" are met: |
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| 9 | .\" 1. Redistributions of source code must retain the above copyright |
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| 10 | .\" notice, this list of conditions and the following disclaimer. |
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| 11 | .\" 2. Redistributions in binary form must reproduce the above copyright |
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| 12 | .\" notice, this list of conditions and the following disclaimer in the |
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| 13 | .\" documentation and/or other materials provided with the distribution. |
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| 14 | .\" 3. All advertising materials mentioning features or use of this software |
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| 15 | .\" must display the following acknowledgement: |
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| 16 | .\" This product includes software developed by the University of |
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| 17 | .\" California, Berkeley and its contributors. |
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| 18 | .\" 4. Neither the name of the University nor the names of its contributors |
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| 19 | .\" may be used to endorse or promote products derived from this software |
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| 20 | .\" without specific prior written permission. |
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| 21 | .\" |
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| 22 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 23 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 24 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 25 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 26 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 27 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 28 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 29 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 30 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 31 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 32 | .\" SUCH DAMAGE. |
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| 33 | .\" |
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| 34 | .\" @(#)look.1 8.1 (Berkeley) 6/14/93 |
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| 35 | .\" |
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| 36 | .TH WHOIS 1 "June 14, 1993" |
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| 37 | .UC 4 |
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| 38 | .SH NAME |
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| 39 | look \- display lines beginning with a given string |
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| 40 | .SH SYNOPSIS |
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| 41 | .B look [ \-df ] [ \-t |
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| 42 | termchar |
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| 43 | .B ] |
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| 44 | string |
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| 45 | .B [ |
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| 46 | file |
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| 47 | .B ] |
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| 48 | .SH DESCRIPTION |
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| 49 | The |
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| 50 | .I look |
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| 51 | utility displays any lines in |
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| 52 | .I file |
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| 53 | which contain |
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| 54 | .I string |
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| 55 | as a prefix. |
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| 56 | As |
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| 57 | .I look |
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| 58 | performs a binary search, the lines in |
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| 59 | .I file |
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| 60 | must be sorted. |
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| 61 | .PP |
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| 62 | If |
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| 63 | .I file |
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| 64 | is not specified, the system dictionary file is used, only |
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| 65 | alphanumeric characters are compared and the case of alphabetic |
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| 66 | characters is ignored. |
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| 67 | .PP |
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| 68 | Options: |
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| 69 | .IP \fB\-d\fP |
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| 70 | Dictionary character set and order, i.e. only alphanumeric characters |
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| 71 | are compared. |
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| 72 | .IP \fB\-f\fP |
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| 73 | Ignore the case of alphabetic characters. |
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| 74 | .IP \fB\-t\fP |
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| 75 | Specify a string termination character, i.e. only the characters |
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| 76 | in |
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| 77 | .I string |
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| 78 | up to and including the first occurrence of |
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| 79 | .I termchar |
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| 80 | are compared. |
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| 81 | .PP |
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| 82 | The |
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| 83 | .I look |
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| 84 | utility exits 0 if one or more lines were found and displayed, |
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| 85 | 1 if no lines were found, and >1 if an error occurred. |
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| 86 | .SH FILES |
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| 87 | The system dictionary file. |
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| 88 | .SH SEE ALSO |
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| 89 | grep(1), sort(1) |
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| 90 | .SH COMPATIBILITY |
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| 91 | The original manual page stated that tabs and blank characters |
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| 92 | participated in comparisons when the \-d option was specified. This |
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| 93 | was incorrect and the current man page matches the historic |
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| 94 | implementation. |
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| 95 | .SH HISTORY |
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| 96 | .I Look |
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| 97 | appeared in Version 7 AT&T Unix. |
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