BSD 4_4 release

[unix-history] / usr / src / usr.bin / head / head.1

diff --git a/usr/src/usr.bin/head/head.1 b/usr/src/usr.bin/head/head.1
index 08db9de..2e47515 100644 (file)
--- a/usr/src/usr.bin/head/head.1
+++ b/usr/src/usr.bin/head/head.1
@@ -1,44 +1,69 @@
-.\" Copyright (c) 1980, 1990 The Regents of the University of California.
-.\" All rights reserved.
+.\" Copyright (c) 1980, 1990, 1993
+.\"    The Regents of the University of California.  All rights reserved.

 .\"
 .\"

-.\" Redistribution and use in source and binary forms are permitted provided
-.\" that: (1) source distributions retain this entire copyright notice and
-.\" comment, and (2) distributions including binaries display the following
-.\" acknowledgement:  ``This product includes software developed by the
-.\" University of California, Berkeley and its contributors'' in the
-.\" documentation or other materials provided with the distribution and in
-.\" all advertising materials mentioning features or use of this software.
-.\" 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
-.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
-.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+.\" 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.

 .\"
 .\"

-.\"     @(#)head.1     6.4 (Berkeley) 7/24/90
+.\" 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.

 .\"
 .\"

-.Dd July 24, 1990
-.Os BSD 4.4
+.\"    @(#)head.1      8.1 (Berkeley) 6/6/93
+.\"
+.Dd June 6, 1993

 .Dt HEAD 1
 .Dt HEAD 1

+.Os BSD 3

 .Sh NAME
 .Nm head
 .Sh NAME
 .Nm head

-.Nd give first few lines
+.Nd display first lines of a file

 .Sh SYNOPSIS
 .Nm head
 .Sh SYNOPSIS
 .Nm head

-.Oo
-.Op Fl Ar count
-.Oo
-.Ar
+.Op Fl n Ar count
+.Op Ar file ...

 .Sh DESCRIPTION
 .Sh DESCRIPTION

-This filter gives the first
+This filter displays the first

 .Ar count
 .Ar count

-lines of each of the specified files, or of the standard input.
+lines of each of the specified files, or of the standard input if no
+files are specified.

 If
 .Ar count
 If
 .Ar count

-is omitted it defaults to
-10.
+is omitted it defaults to 10.
+.Pp
+If more than a single file is specified, each file is preceded by a
+header consisting of the string
+.Dq ==> XXX <==
+where
+.Dq XXX
+is the name of the file.
+.Pp
+The
+.Nm head
+utility exits 0 on success, and >0 if an error occurs.

 .Sh SEE ALSO
 .Xr tail 1
 .Sh HISTORY
 .Sh SEE ALSO
 .Xr tail 1
 .Sh HISTORY

+The

 .Nm head
 .Nm head

-appeared in 3 BSD.
+command appeared in
+.Bx 3.0 .