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freebsd/usr.bin/basename/basename.1
2005-01-18 13:43:56 +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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.\" 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
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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
.Op Fl a
.Op Fl s Ar suffix
.Ar string
.Op Ar ...
.Nm dirname
.Ar string
.Sh DESCRIPTION
The
.Nm
utility 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.
If
.Fl a
is specified, then every argument is treated as a
.Ar string
as if
.Nm
were invoked with just one argument.
If
.Fl s
is specified, then the
.Ar suffix
is taken as its argument, and all other arguments are treated as a
.Ar string .
.Pp
The
.Nm dirname
utility 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 EXIT STATUS
.Ex -std basename dirname
.Sh EXAMPLES
The following line sets the shell variable
.Ev FOO
to
.Pa /usr/bin .
.Pp
.Dl FOO=`dirname /usr/bin/trail`
.Sh SEE ALSO
.Xr csh 1 ,
.Xr sh 1
.Sh STANDARDS
The
.Nm
and
.Nm dirname
utilities are expected to be
.St -p1003.2
compatible.