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.\" 4. 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.\" @(#)chgrp.1 8.3 (Berkeley) 3/31/94 32.\" $FreeBSD$ 33.\" 34.Dd April 25, 2003 35.Dt CHGRP 1 36.Os 37.Sh NAME 38.Nm chgrp 39.Nd change group 40.Sh SYNOPSIS 41.Nm 42.Op Fl fhv 43.Oo 44.Fl R 45.Op Fl H | Fl L | Fl P 46.Oc 47.Ar group 48.Ar 49.Sh DESCRIPTION 50The 51.Nm 52utility sets the group ID of the file named by each 53.Ar file 54operand to the 55.Ar group 56ID specified by the group operand. 57.Pp 58The following options are available: 59.Bl -tag -width indent 60.It Fl H 61If the 62.Fl R 63option is specified, symbolic links on the command line are followed. 64(Symbolic links encountered in the tree traversal are not followed). 65.It Fl L 66If the 67.Fl R 68option is specified, all symbolic links are followed. 69.It Fl P 70If the 71.Fl R 72option is specified, no symbolic links are followed. 73This is the default. 74.It Fl R 75Change the group ID for the file hierarchies rooted 76in the files instead of just the files themselves. 77.It Fl f 78The force option ignores errors, except for usage errors and does not 79query about strange modes (unless the user does not have proper permissions). 80.It Fl h 81If the file is a symbolic link, the group ID of the link itself is changed 82rather than the file that is pointed to. 83.It Fl v 84Cause 85.Nm 86to be verbose, showing files as the group is modified. 87If the 88.Fl v 89flag is specified more than once, 90.Nm 91will print the filename, followed by the old and new numeric group ID. 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 FILES 117.Bl -tag -width /etc/group -compact 118.It Pa /etc/group 119group ID file 120.El 121.Sh EXIT STATUS 122.Ex -std 123.Sh COMPATIBILITY 124In previous versions of this system, symbolic links did not have groups. 125.Pp 126The 127.Fl v 128option is non-standard and its use in scripts is not recommended. 129.Sh SEE ALSO 130.Xr chown 2 , 131.Xr fts 3 , 132.Xr group 5 , 133.Xr passwd 5 , 134.Xr symlink 7 , 135.Xr chown 8 136.Sh STANDARDS 137The 138.Nm 139utility is expected to be 140.St -p1003.2 141compatible. 142