xref: /openbsd-src/usr.bin/dirname/dirname.1 (revision 25ab49ce393a418c4e534472e9dd58b5d225dadb)

.\"	$OpenBSD: dirname.1,v 1.9 2014/02/16 23:09:48 schwarze Exp $
.\"
.\" Copyright (c) 1990, 1993, 1994
.\"	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.
.\"
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.\" 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. 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.
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.\" 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
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\"     @(#)dirname.1	8.2 (Berkeley) 4/18/94
.\"
.Dd $Mdocdate: February 16 2014 $
.Dt DIRNAME 1
.Os
.Sh NAME
.Nm dirname
.Nd return directory portion of pathname
.Sh SYNOPSIS
.Nm dirname
.Ar pathname
.Sh DESCRIPTION
.Nm
deletes the filename portion, beginning
with the last slash
.Pq Sq \&/
character to the end of
.Ar pathname ,
and writes the result to the standard output.
.Sh EXIT STATUS
.Ex -std dirname
.Sh EXAMPLES
The following line sets the shell variable
.Ev FOO
to
.Pa /usr/bin :
.Pp
.Dl FOO=`dirname /usr/bin/tail`
.Sh SEE ALSO
.Xr basename 1 ,
.Xr csh 1 ,
.Xr sh 1 ,
.Xr dirname 3
.Sh STANDARDS
The
.Nm
utility is compliant with the
.St -p1003.1-2008
specification.
.Sh HISTORY
The
.Nm
utility first appeared as an
.Xr expr 1
script in
.At III .
It was reimplemented in C for
.Bx 4.3 Reno
and reimplemented again using
.Xr dirname 3
for
.Ox 2.2 .
.Sh AUTHORS
.An -nosplit
The original
.Bx
version was written by
.An Keith Bostic .
The current
.Ox
version was written by
.An Todd Miller Aq Mt millert@openbsd.org .