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. Neither the name of the University nor the names of its contributors 16.\" may be used to endorse or promote products derived from this software 17.\" without specific prior written permission. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29.\" SUCH DAMAGE. 30.\" 31.\" @(#)basename.1 8.2 (Berkeley) 4/18/94 32.\" 33.Dd June 21, 2021 34.Dt BASENAME 1 35.Os 36.Sh NAME 37.Nm basename , dirname 38.Nd return filename or directory portion of pathname 39.Sh SYNOPSIS 40.Nm 41.Ar string 42.Op Ar suffix 43.Nm 44.Op Fl a 45.Op Fl s Ar suffix 46.Ar string 47.Op Ar ... 48.Nm dirname 49.Ar string 50.Op Ar ... 51.Sh DESCRIPTION 52The 53.Nm 54utility deletes any prefix ending with the last slash 55.Ql \&/ 56character present in 57.Ar string 58(after first stripping trailing slashes), 59and a 60.Ar suffix , 61if given. 62The 63.Ar suffix 64is not stripped if it is identical to the remaining characters in 65.Ar string . 66The resulting filename is written to the standard output. 67A non-existent suffix is ignored. 68If 69.Fl a 70is specified, then every argument is treated as a 71.Ar string 72as if 73.Nm 74were invoked with just one argument. 75If 76.Fl s 77is specified, then the 78.Ar suffix 79is taken as its argument, and all other arguments are treated as a 80.Ar string . 81.Pp 82The 83.Nm dirname 84utility deletes the filename portion, beginning 85with the last slash 86.Ql \&/ 87character to the end of 88.Ar string 89(after first stripping trailing slashes), 90and writes the result to the standard output. 91.Sh EXIT STATUS 92.Ex -std basename dirname 93.Sh EXAMPLES 94The following line sets the shell variable 95.Ev FOO 96to 97.Pa /usr/bin . 98.Pp 99.Dl FOO=`dirname /usr/bin/trail` 100.Sh SEE ALSO 101.Xr csh 1 , 102.Xr sh 1 , 103.Xr basename 3 , 104.Xr dirname 3 105.Sh STANDARDS 106The 107.Nm 108and 109.Nm dirname 110utilities are expected to be 111.St -p1003.2 112compatible. 113.Sh HISTORY 114The 115.Nm 116utility first appeared in 117.At v7 . 118The 119.Nm dirname 120utility first appeared in 121.At III . 122