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.Dd January 26, 1995 32.Dt WHICH 1 33.Os 34.Sh NAME 35.Nm which 36.Nd "locate a program file in the user's path" 37.Sh SYNOPSIS 38.Nm 39.Op Fl as 40.Op Ar command 41.Ar ... 42.Sh DESCRIPTION 43The 44.Nm 45utility 46takes a list of command names and searches the path for each executable 47file that would be run had these commands actually been invoked. 48.Pp 49The following options are available: 50.Bl -tag -width indent 51.It Fl a 52List all instances of executables found (instead of just the first one 53of each). 54.It Fl s 55No output, just return 0 if any of the executables are found, or 1 if 56none are found. 57.El 58.Pp 59Some shells may provide a builtin 60.Nm 61command which is similar or identical to this utility. 62Consult the 63.Xr builtin 1 64manual page. 65.Sh HISTORY 66The 67.Nm 68command first appeared in 69.Fx 2.1 . 70.Sh SEE ALSO 71.Xr builtin 1 , 72.Xr csh 1 , 73.Xr find 1 , 74.Xr locate 1 , 75.Xr perl 1 , 76.Xr whereis 1 77.Sh AUTHORS 78The PERL script for this more modern version of 79.Nm 80was written by 81.An Wolfram Schneider Aq wosch@FreeBSD.org . 82