1.\" Manpage Copyright (c) 1995, Jordan Hubbard <jkh@FreeBSD.org> 2.\" 3.\" Redistribution and use in source and binary forms, with or without 4.\" modification, are permitted provided that the following conditions 5.\" are met: 6.\" 1. Redistributions of source code must retain the above copyright 7.\" notice, this list of conditions and the following disclaimer. 8.\" 2. Redistributions in binary form must reproduce the above copyright 9.\" notice, this list of conditions and the following disclaimer in the 10.\" documentation and/or other materials provided with the distribution. 11.\" 3. All advertising materials mentioning features or use of this software 12.\" must display the following acknowledgement: 13.\" This product includes software developed by the FreeBSD Project 14.\" its contributors. 15.\" 4. Neither the name of the FreeBSD Project 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 CONTRIBUTOR ``AS IS'' AND ANY EXPRESS OR 20.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22.\" IN NO EVENT SHALL THE CONTRIBUTOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28.\" OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29.\" 30.\" $FreeBSD$ 31.\" 32.Dd June 21, 2002 33.Dt WHICH 1 34.Os 35.Sh NAME 36.Nm which 37.Nd "locate a program file in the user's path" 38.Sh SYNOPSIS 39.Nm 40.Op Fl as 41.Op Ar command 42.Ar ... 43.Sh DESCRIPTION 44The 45.Nm 46utility 47takes a list of command names and searches the path for each executable 48file that would be run had these commands actually been invoked. 49.Pp 50The following options are available: 51.Bl -tag -width indent 52.It Fl a 53List all instances of executables found (instead of just the first one 54of each). 55.It Fl s 56No output, just return 0 if any of the executables are found, or 1 if 57none are found. 58.El 59.Pp 60Some shells may provide a builtin 61.Nm 62command which is similar or identical to this utility. 63Consult the 64.Xr builtin 1 65manual page. 66.Sh SEE ALSO 67.Xr builtin 1 , 68.Xr csh 1 , 69.Xr find 1 , 70.Xr locate 1 , 71.Xr whereis 1 72.Sh HISTORY 73The 74.Nm 75command first appeared in 76.Fx 2.1 . 77.Sh AUTHORS 78.An -nosplit 79The 80.Nm 81utility was originally written in Perl and was contributed by 82.An Wolfram Schneider Aq wosch@FreeBSD.org . 83The current version of 84.Nm 85was rewritten in C by 86.An Daniel Papasian Aq dpapasia@andrew.cmu.edu . 87