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bdcbfde31e
Remove ancient SCCS tags from the tree, automated scripting, with two minor fixup to keep things compiling. All the common forms in the tree were removed with a perl script. Sponsored by: Netflix
210 lines
5.4 KiB
Groff
210 lines
5.4 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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.Dd April 11, 2020
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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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Write the length of the line containing the most bytes (default) or characters
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(when
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.Fl m
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is provided)
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to 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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.Pp
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If
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.Nm
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receives a
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.Dv SIGINFO
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(see the
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.Cm status
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argument for
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.Xr stty 1 )
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signal, the interim data will be written
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to the standard error output in the same format
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as the standard completion message.
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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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