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Annotation of src/usr.bin/look/look.1, Revision 1.1.1.1

1.1       deraadt     1: .\"    $NetBSD: look.1,v 1.3 1994/12/23 01:10:59 jtc Exp $
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                      3: .\" Copyright (c) 1990, 1993
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                     34: .\"     @(#)look.1     8.1 (Berkeley) 6/14/93
                     35: .\"
                     36: .Dd June 14, 1993
                     37: .Dt LOOK 1
                     38: .Os
                     39: .Sh NAME
                     40: .Nm look
                     41: .Nd display lines beginning with a given string
                     42: .Sh SYNOPSIS
                     43: .Nm look
                     44: .Op Fl df
                     45: .Op Fl t Ar termchar
                     46: .Ar string
                     47: .Op Ar file
                     48: .Sh DESCRIPTION
                     49: The
                     50: .Nm look
                     51: utility displays any lines in
                     52: .Ar file
                     53: which contain
                     54: .Ar string
                     55: as a prefix.
                     56: As
                     57: .Nm look
                     58: performs a binary search, the lines in
                     59: .Ar file
                     60: must be sorted.
                     61: .Pp
                     62: If
                     63: .Ar file
                     64: is not specified, the file
                     65: .Pa /usr/share/dict/words
                     66: is used, only alphanumeric characters are compared and the case of
                     67: alphabetic characters is ignored.
                     68: .Pp
                     69: Options:
                     70: .Bl -tag -width Ds
                     71: .It Fl d
                     72: Dictionary character set and order, i.e. only alphanumeric characters
                     73: are compared.
                     74: .It Fl f
                     75: Ignore the case of alphabetic characters.
                     76: .It Fl t
                     77: Specify a string termination character, i.e. only the characters
                     78: in
                     79: .Ar string
                     80: up to and including the first occurrence of
                     81: .Ar termchar
                     82: are compared.
                     83: .El
                     84: .Pp
                     85: The
                     86: .Nm look
                     87: utility exits 0 if one or more lines were found and displayed,
                     88: 1 if no lines were found, and >1 if an error occurred.
                     89: .Sh FILES
                     90: .Bl -tag -width /usr/share/dict/words -compact
                     91: .It Pa /usr/share/dict/words
                     92: the dictionary
                     93: .El
                     94: .Sh SEE ALSO
                     95: .Xr grep 1 ,
                     96: .Xr sort 1
                     97: .Sh COMPATIBILITY
                     98: The original manual page stated that tabs and blank characters participated
                     99: in comparisons when the
                    100: .Fl d
                    101: option was specified.
                    102: This was incorrect and the current man page matches the historic
                    103: implementation.
                    104: .Sh HISTORY
                    105: .Nm Look
                    106: appeared in Version 7 AT&T Unix.