1.\" $NetBSD: shells.5,v 1.8 2003/08/07 10:31:17 agc Exp $ 2.\" 3.\" Copyright (c) 1986, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" @(#)shells.5 8.1 (Berkeley) 6/5/93 31.\" 32.Dd January 16, 1999 33.Dt SHELLS 5 34.Os 35.Sh NAME 36.Nm shells 37.Nd shell database 38.Sh DESCRIPTION 39The 40.Nm shells 41file contains a list of the shells on the system. 42It can be used in conjunction with the Hesiod domain 43.Sq shells , 44and the 45.Tn NIS 46map 47.Sq shells , 48as controlled by 49.Xr nsswitch.conf 5 . 50.Pp 51For each shell a single line should be present, consisting of the 52shell's path, relative to root. 53.Pp 54A hash 55.Pq Dq \&# 56indicates the beginning of a comment; subsequent 57characters up to the end of the line are not interpreted by the 58routines which search the file. 59Blank lines are also ignored. 60.Sh FILES 61.Bl -tag -width /etc/shells -compact 62.It Pa /etc/shells 63The 64.Nm shells 65file resides in 66.Pa /etc . 67.El 68.Sh SEE ALSO 69.Xr chsh 1 , 70.Xr getusershell 3 , 71.Xr nsswitch.conf 5 72.Sh HISTORY 73The 74.Nm 75file format appeared in 76.Bx 4.3 tahoe . 77.Pp 78The Hesiod and 79.Tn NIS 80support first appeared in 81.Nx 1.4 . 82