1.\" Copyright (c) 1983, 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.\" @(#)chgrp.1 8.3 (Berkeley) 3/31/94 36.\" $FreeBSD$ 37.\" 38.Dd March 31, 1994 39.Dt CHGRP 1 40.Os BSD 4.2 41.Sh NAME 42.Nm chgrp 43.Nd change group 44.Sh SYNOPSIS 45.Nm chgrp 46.Oo 47.Fl R 48.Op Fl H | Fl L | Fl P 49.Oc 50.Op Fl f 51.Op Fl h 52.Op Fl v 53.Ar group 54.Ar 55.Sh DESCRIPTION 56The 57.Nm 58utility sets the group ID of the file named by each 59.Ar file 60operand to the 61.Ar group 62ID specified by the group operand. 63.Pp 64The following options are available: 65.Bl -tag -width indent 66.It Fl H 67If the 68.Fl R 69option is specified, symbolic links on the command line are followed. 70(Symbolic links encountered in the tree traversal are not followed). 71.It Fl L 72If the 73.Fl R 74option is specified, all symbolic links are followed. 75.It Fl P 76If the 77.Fl R 78option is specified, no symbolic links are followed. 79.It Fl R 80Change the group ID for the file hierarchies rooted 81in the files instead of just the files themselves. 82.It Fl f 83The force option ignores errors, except for usage errors and doesn't 84query about strange modes (unless the user does not have proper permissions). 85.It Fl h 86If the file is a symbolic link, the group ID of the link itself is changed 87rather than the file that is pointed to. 88.It Fl v 89Cause 90.Nm 91to be verbose, showing files as the group is modified. 92.El 93.Pp 94The 95.Fl H , 96.Fl L 97and 98.Fl P 99options are ignored unless the 100.Fl R 101option is specified. 102In addition, these options override each other and the 103command's actions are determined by the last one specified. 104.Pp 105The 106.Ar group 107operand can be either a group name from the group database, 108or a numeric group ID. 109If a group name is also a numeric group ID, the operand is used as a 110group name. 111.Pp 112The user invoking 113.Nm 114must belong to the specified group and be the owner of the file, 115or be the super-user. 116.Sh DIAGNOSTICS 117The 118.Nm 119utility exits 0 on success, and >0 if an error occurs. 120.Sh COMPATIBILITY 121In previous versions of this system, symbolic links did not have groups. 122.Pp 123The 124.Fl v 125option is non-standard and its use in scripts is not recommended. 126.Sh FILES 127.Bl -tag -width /etc/group -compact 128.It Pa /etc/group 129group ID file 130.El 131.Sh SEE ALSO 132.Xr chown 2 , 133.Xr fts 3 , 134.Xr group 5 , 135.Xr passwd 5 , 136.Xr symlink 7 , 137.Xr chown 8 138.Sh STANDARDS 139The 140.Nm 141utility is expected to be 142.St -p1003.2 143compatible. 144