mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-14 10:09:48 +00:00
124 lines
3.8 KiB
Groff
124 lines
3.8 KiB
Groff
.\" Copyright (c) 1989, 1990, 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.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 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.
|
|
.\"
|
|
.\" @(#)cat.1 8.3 (Berkeley) 5/2/95
|
|
.\" $Id: cat.1,v 1.7 1998/05/06 06:49:13 charnier Exp $
|
|
.\"
|
|
.Dd May 2, 1995
|
|
.Dt CAT 1
|
|
.Os BSD 3
|
|
.Sh NAME
|
|
.Nm cat
|
|
.Nd concatenate and print files
|
|
.Sh SYNOPSIS
|
|
.Nm cat
|
|
.Op Fl benstuv
|
|
.Op Fl
|
|
.Op Ar
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility reads files sequentially, writing them to the standard output.
|
|
The
|
|
.Ar file
|
|
operands are processed in command line order.
|
|
A single dash represents the standard input.
|
|
.Pp
|
|
The options are as follows:
|
|
.Bl -tag -width indent
|
|
.It Fl b
|
|
Number the non-blank output lines, starting at 1.
|
|
.It Fl e
|
|
Display non-printing characters (see the
|
|
.Fl v
|
|
option), and display a dollar sign
|
|
.Pq Ql \&$
|
|
at the end of each line.
|
|
.It Fl n
|
|
Number the output lines, starting at 1.
|
|
.It Fl s
|
|
Squeeze multiple adjacent empty lines, causing the output to be
|
|
single spaced.
|
|
.It Fl t
|
|
Display non-printing characters (see the
|
|
.Fl v
|
|
option), and display tab characters as
|
|
.Ql ^I .
|
|
.It Fl u
|
|
The
|
|
.Fl u
|
|
option guarantees that the output is unbuffered.
|
|
.It Fl v
|
|
Display non-printing characters so they are visible.
|
|
Control characters print as
|
|
.Ql ^X
|
|
for control-X; the delete
|
|
character (octal 0177) prints as
|
|
.Ql ^?
|
|
.Pf Non- Tn ASCII
|
|
characters (with the high bit set) are printed as
|
|
.Ql M-
|
|
(for meta) followed by the character for the low 7 bits.
|
|
.El
|
|
.Pp
|
|
The
|
|
.Nm
|
|
utility exits 0 on success, and >0 if an error occurs.
|
|
.Sh BUGS
|
|
Because of the shell language mechanism used to perform output
|
|
redirection, the command
|
|
.Dq Li cat file1 file2 > file1
|
|
will cause the original data in file1 to be destroyed!
|
|
.Sh SEE ALSO
|
|
.Xr head 1 ,
|
|
.Xr more 1 ,
|
|
.Xr pr 1 ,
|
|
.Xr tail 1 ,
|
|
.Xr vis 1
|
|
.Rs
|
|
.%A Rob Pike
|
|
.%T "UNIX Style, or cat -v Considered Harmful"
|
|
.%J "USENIX Summer Conference Proceedings"
|
|
.%D 1983
|
|
.Re
|
|
.Sh HISTORY
|
|
A
|
|
.Nm
|
|
command appeared in Version 1 AT&T UNIX.
|
|
.An Dennis Ritchie
|
|
designed and wrote the first man page.
|
|
It appears to have been
|
|
.Xr cat 1 .
|
|
|