1.\" Copyright (c) 1990, 1993, 1994 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the Institute of Electrical and Electronics Engineers, Inc. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. All advertising materials mentioning features or use of this software 16.\" must display the following acknowledgement: 17.\" This product includes software developed by the University of 18.\" California, Berkeley and its contributors. 19.\" 4. Neither the name of the University nor the names of its contributors 20.\" may be used to endorse or promote products derived from this software 21.\" without specific prior written permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" @(#)basename.1 8.2 (Berkeley) 4/18/94 36.\" $Id$ 37.\" 38.Dd April 18, 1994 39.Dt BASENAME 1 40.Os 41.Sh NAME 42.Nm basename , dirname 43.Nd return filename or directory portion of pathname 44.Sh SYNOPSIS 45.Nm basename 46.Ar string 47.Op Ar suffix 48.Nm dirname 49.Ar string 50.Sh DESCRIPTION 51.Nm Basename 52deletes any prefix ending with the last slash 53.Ql \&/ 54character present in 55.Ar string , 56and a 57.Ar suffix , 58if given. 59The resulting filename is written to the standard output. 60If 61.Ar string 62ends in the slash character, 63.Ql / , 64or is the same as the 65.Ar suffix 66argument, 67a newline is output. 68A non-existent suffix is ignored. 69.Pp 70.Nm Dirname 71deletes the filename portion, beginning 72with the last slash 73.Ql \&/ 74character to the end of 75.Ar string , 76and writes the result to the standard output. 77.Sh EXAMPLES 78The following line sets the shell variable 79.Ev FOO 80to 81.Pa /usr/bin . 82.Pp 83.Dl FOO=`dirname /usr/bin/trail` 84.Pp 85Both the 86.Nm basename 87and 88.Nm dirname 89exit 0 on success, and >0 if an error occurs. 90.Sh SEE ALSO 91.Xr csh 1 , 92.Xr sh 1 93.Sh STANDARDS 94The 95.Nm basename 96and 97.Nm dirname 98functions are expected to be POSIX 1003.2 compatible. 99