191 lines
5.1 KiB
Groff
191 lines
5.1 KiB
Groff
.\" Copyright (c) 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to Berkeley by
|
|
.\" the Institute of Electrical and Electronics Engineers, Inc.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)wc.1 8.2 (Berkeley) 4/19/94
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd November 4, 2014
|
|
.Dt WC 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm wc
|
|
.Nd word, line, character, and byte count
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl -libxo
|
|
.Op Fl Lclmw
|
|
.Op Ar
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility displays the number of lines, words, and bytes contained in each
|
|
input
|
|
.Ar file ,
|
|
or standard input (if no file is specified) to the standard output.
|
|
A line is defined as a string of characters delimited by a
|
|
.Aq newline
|
|
character.
|
|
Characters beyond the final
|
|
.Aq newline
|
|
character will not be included
|
|
in the line count.
|
|
.Pp
|
|
A word is defined as a string of characters delimited by white space
|
|
characters.
|
|
White space characters are the set of characters for which the
|
|
.Xr iswspace 3
|
|
function returns true.
|
|
If more than one input file is specified, a line of cumulative counts
|
|
for all the files is displayed on a separate line after the output for
|
|
the last file.
|
|
.Pp
|
|
The following options are available:
|
|
.Bl -tag -width indent
|
|
.It Fl L
|
|
The number of characters in the longest input line
|
|
is written to the standard output.
|
|
When more then one
|
|
.Ar file
|
|
argument is specified, the longest input line of
|
|
.Em all
|
|
files is reported as the value of the final
|
|
.Dq total .
|
|
.It Fl c
|
|
The number of bytes in each input file
|
|
is written to the standard output.
|
|
This will cancel out any prior usage of the
|
|
.Fl m
|
|
option.
|
|
.It Fl l
|
|
The number of lines in each input file
|
|
is written to the standard output.
|
|
.It Fl m
|
|
The number of characters in each input file is written to the standard output.
|
|
If the current locale does not support multibyte characters, this
|
|
is equivalent to the
|
|
.Fl c
|
|
option.
|
|
This will cancel out any prior usage of the
|
|
.Fl c
|
|
option.
|
|
.It Fl w
|
|
The number of words in each input file
|
|
is written to the standard output.
|
|
.El
|
|
.Pp
|
|
When an option is specified,
|
|
.Nm
|
|
only reports the information requested by that option.
|
|
The order of output always takes the form of line, word,
|
|
byte, and file name.
|
|
The default action is equivalent to specifying the
|
|
.Fl c , l
|
|
and
|
|
.Fl w
|
|
options.
|
|
.Pp
|
|
If no files are specified, the standard input is used and no
|
|
file name is displayed.
|
|
The prompt will accept input until receiving EOF, or
|
|
.Bq ^D
|
|
in most environments.
|
|
.Sh ENVIRONMENT
|
|
The
|
|
.Ev LANG , LC_ALL
|
|
and
|
|
.Ev LC_CTYPE
|
|
environment variables affect the execution of
|
|
.Nm
|
|
as described in
|
|
.Xr environ 7 .
|
|
.Sh EXIT STATUS
|
|
.Ex -std
|
|
.Sh EXAMPLES
|
|
Count the number of characters, words and lines in each of the files
|
|
.Pa report1
|
|
and
|
|
.Pa report2
|
|
as well as the totals for both:
|
|
.Pp
|
|
.Dl "wc -mlw report1 report2"
|
|
.Pp
|
|
Find the longest line in a list of files:
|
|
.Pp
|
|
.Dl "wc -L file1 file2 file3 | fgrep total"
|
|
.Sh COMPATIBILITY
|
|
Historically, the
|
|
.Nm
|
|
utility was documented to define a word as a
|
|
.Do
|
|
maximal string of
|
|
characters delimited by <space>, <tab> or <newline> characters
|
|
.Dc .
|
|
The implementation, however, did not handle non-printing characters
|
|
correctly so that
|
|
.Dq Li "\ \ ^D^E\ \ "
|
|
counted as 6 spaces, while
|
|
.Dq Li foo^D^Ebar
|
|
counted as 8 characters.
|
|
.Bx 4
|
|
systems after
|
|
.Bx 4.3
|
|
modified the implementation to be consistent
|
|
with the documentation.
|
|
This implementation defines a
|
|
.Dq word
|
|
in terms of the
|
|
.Xr iswspace 3
|
|
function, as required by
|
|
.St -p1003.2 .
|
|
.Pp
|
|
The
|
|
.Fl L
|
|
option is a non-standard
|
|
.Fx
|
|
extension, compatible with the
|
|
.Fl L
|
|
option of the GNU
|
|
.Nm
|
|
utility.
|
|
.Sh SEE ALSO
|
|
.Xr iswspace 3
|
|
.Xr libxo 3
|
|
.Xr xo_parse_args 3
|
|
.Sh STANDARDS
|
|
The
|
|
.Nm
|
|
utility conforms to
|
|
.St -p1003.1-2001 .
|
|
.Sh HISTORY
|
|
A
|
|
.Nm
|
|
command appeared in
|
|
.At v1 .
|