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freebsd/usr.bin/basename/basename.1
2001-08-15 09:09:47 +00:00

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.\" 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
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.\" notice, this list of conditions and the following disclaimer.
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.\" 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.
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.\"
.\" @(#)basename.1 8.2 (Berkeley) 4/18/94
.\" $FreeBSD$
.\"
.Dd April 18, 1994
.Dt BASENAME 1
.Os
.Sh NAME
.Nm basename , dirname
.Nd return filename or directory portion of pathname
.Sh SYNOPSIS
.Nm
.Ar string
.Op Ar suffix
.Nm dirname
.Ar string
.Sh DESCRIPTION
.Nm Basename
deletes any prefix ending with the last slash
.Ql \&/
character present in
.Ar string
(after first stripping trailing slashes),
and a
.Ar suffix ,
if given.
The
.Ar suffix
is not stripped if it is identical to the remaining characters in
.Ar string .
The resulting filename is written to the standard output.
A non-existent suffix is ignored.
.Pp
.Nm Dirname
deletes the filename portion, beginning
with the last slash
.Ql \&/
character to the end of
.Ar string
(after first stripping trailing slashes),
and writes the result to the standard output.
.Sh EXAMPLES
The following line sets the shell variable
.Ev FOO
to
.Pa /usr/bin .
.Pp
.Dl FOO=`dirname /usr/bin/trail`
.Sh DIAGNOSTICS
.Ex -std basename dirname
.Sh SEE ALSO
.Xr csh 1 ,
.Xr sh 1
.Sh STANDARDS
The
.Nm
and
.Nm dirname
functions are expected to be
.St -p1003.2
compatible.