7e6cabd06e
Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
198 lines
5.3 KiB
Groff
198 lines
5.3 KiB
Groff
.\" 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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.\" @(#)wc.1 8.2 (Berkeley) 4/19/94
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.\" $FreeBSD$
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.\"
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.Dd December 1, 2015
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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, character, and byte count
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.Sh SYNOPSIS
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.Nm
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.Op Fl -libxo
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.Op Fl Lclmw
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.Op Ar
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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, and bytes contained in each
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input
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.Ar file ,
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or standard input (if no file is specified) to the standard output.
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A line is defined as a string of characters delimited by a
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.Aq newline
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character.
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Characters beyond the final
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.Aq newline
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character will not be included
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in the line count.
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.Pp
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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 indent
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.It Fl -libxo
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Generate output via
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.Xr libxo 3
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in a selection of different human and machine readable formats.
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See
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.Xr xo_parse_args 3
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for details on command line arguments.
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.It Fl L
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The number of characters in the longest input line
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is written to the standard output.
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When more than one
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.Ar file
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argument is specified, the longest input line of
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.Em all
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files is reported as the value of the final
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.Dq total .
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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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This will cancel out any prior usage of the
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.Fl m
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option.
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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 is written to the standard output.
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If the current locale does not support multibyte characters, this
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is equivalent to the
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.Fl c
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option.
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This will cancel out any prior usage of the
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.Fl c
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option.
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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 reports the information requested by that option.
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The order of output always takes the form of line, word,
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byte, and file name.
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The default action is equivalent to specifying the
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.Fl c , l
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and
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.Fl w
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options.
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.Pp
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If no files are specified, the standard input is used and no
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file name is displayed.
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The prompt will accept input until receiving EOF, or
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.Bq ^D
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in most environments.
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.Sh ENVIRONMENT
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The
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.Ev LANG , LC_ALL
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and
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.Ev LC_CTYPE
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environment variables affect the execution of
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.Nm
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as described in
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.Xr environ 7 .
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.Sh EXIT STATUS
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.Ex -std
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.Sh EXAMPLES
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Count the number of characters, words and lines in each of the files
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.Pa report1
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and
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.Pa report2
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as well as the totals for both:
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.Pp
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.Dl "wc -mlw report1 report2"
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.Pp
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Find the longest line in a list of files:
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.Pp
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.Dl "wc -L file1 file2 file3 | fgrep total"
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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
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.Do
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maximal string of
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characters delimited by <space>, <tab> or <newline> characters
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.Dc .
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The implementation, however, did not handle non-printing characters
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correctly so that
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.Dq Li "\ \ ^D^E\ \ "
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counted as 6 spaces, while
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.Dq Li 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
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.Dq word
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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
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.Fx
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extension, compatible with the
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.Fl L
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option of the GNU
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.Nm
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utility.
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.Sh SEE ALSO
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.Xr iswspace 3 ,
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.Xr libxo 3 ,
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.Xr xo_parse_args 3
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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 -p1003.1-2001 .
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.Sh HISTORY
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A
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.Nm
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command appeared in
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.At v1 .
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