146 lines
4.3 KiB
Groff
146 lines
4.3 KiB
Groff
.\" $NetBSD: wc.1,v 1.15 2010/02/18 13:14:51 wiz Exp $
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.\"
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.\" Copyright (c) 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" the Institute of Electrical and Electronics Engineers, Inc.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" from: @(#)wc.1 8.2 (Berkeley) 4/19/94
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.\"
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.Dd February 18, 2010
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.Dt WC 1
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.Os
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.Sh NAME
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.Nm wc
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.Nd word, line, and byte count
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.Sh SYNOPSIS
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.Nm
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.Op Fl c | Fl m
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.Op Fl Llw
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.Op Ar file ...
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.Sh DESCRIPTION
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The
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.Nm
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utility displays the number of lines, words, bytes and characters contained in each
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input
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.Ar file
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(or standard input, by default) to the standard output.
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A line is defined as a string of characters delimited by a \*[Lt]newline\*[Gt]
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character,
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and a word is defined as a string of characters delimited by white space
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characters.
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White space characters are the set of characters for which the
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.Xr iswspace 3
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function returns true.
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If more than one input file is specified, a line of cumulative counts
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for all the files is displayed on a separate line after the output for
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the last file.
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.Pp
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The following options are available:
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.Bl -tag -width Ds
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.It Fl c
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The number of bytes in each input file
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is written to the standard output.
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.It Fl L
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The number of characters in the longest line of each input file
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is written to the standard output.
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.It Fl l
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The number of lines in each input file
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is written to the standard output.
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.It Fl m
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The number of characters in each input file
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is written to the standard output.
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.It Fl w
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The number of words in each input file
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is written to the standard output.
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.El
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.Pp
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When an option is specified,
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.Nm
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only
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reports the
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information requested by that option.
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The default action is equivalent to all the flags
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.Fl clw
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having been specified.
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.Pp
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The following operands are available:
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.Bl -tag -width Ds
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.It Ar file
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A pathname of an input file.
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.El
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.Pp
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If no file names
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are specified, the standard input is used and
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no file name is displayed.
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.Pp
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By default, the standard output contains a line for each
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input file of the form:
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.Bd -literal -offset indent
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lines words bytes file_name
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.Ed
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.Sh EXIT STATUS
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.Ex -std wc
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.Sh SEE ALSO
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.Xr iswspace 3
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.Sh COMPATIBILITY
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Historically, the
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.Nm
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utility was documented to define a word as a ``maximal string of
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characters delimited by
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.Aq space ,
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.Aq tab
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or
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.Aq newline
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characters''.
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The implementation, however, didn't handle non-printing characters
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correctly so that `` ^D^E '' counted as 6 spaces, while ``foo^D^Ebar''
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counted as 8 characters.
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.Bx 4
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systems after
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.Bx 4.3
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modified the implementation to be consistent
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with the documentation.
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This implementation defines a ``word'' in terms of the
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.Xr iswspace 3
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function, as required by
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.St -p1003.2 .
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.Pp
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The
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.Fl L
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option is a non-standard extension, compatible with the
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.Fl L
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option of the GNU and
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.Fx
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.Nm
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utilities.
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.Sh STANDARDS
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The
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.Nm
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utility conforms to
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.St -p1003.2-92 .
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