89 lines
2.9 KiB
Groff
89 lines
2.9 KiB
Groff
.\" $NetBSD: dirname.3,v 1.3 1999/03/22 19:44:39 garbled Exp $
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.\"
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.\" Copyright (c) 1997 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Klaus Klein.
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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. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd Nov 2, 1997
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.Dt DIRNAME 3
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.Os
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.Sh NAME
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.Nm dirname
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.Nd report the parent directory name of a file pathname
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.Fd #include <libgen.h>
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.Ft char *
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.Fn dirname "char *path"
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.Sh DESCRIPTION
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The
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.Fn dirname
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function takes a pointer to a character string that contains a pathname,
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.Ar path ,
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and returns a pointer to a string that is a pathname of the parent directory of
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.Ar path .
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Trailing '/' characters in
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.Ar path
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are not counted as part of the path.
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.Pp
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If
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.Ar path
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does not contain a '/', then
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.Fn dirname
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returns a pointer to the string ".".
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.Pp
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If
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.Ar path
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is a null pointer or points to an empty string,
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.Fn dirname
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returns a pointer to the string ".".
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.Pp
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.Sh RETURN VALUES
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The
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.Fn dirname
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function returns a pointer to a string that is the parent directory of
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.Ar path .
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.Sh SEE ALSO
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.Xr basename 3
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.Sh STANDARDS
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.Bl -bullet -compact
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.It
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.St -xpg4.2
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.El
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.Sh BUGS
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The
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.Fn dirname
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function may modify the string pointed to by
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.Ar path .
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