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.Op Fl fhv 47.Oo 48.Fl R 49.Op Fl H | Fl L | Fl P 50.Oc 51.Ar group 52.Ar 53.Sh DESCRIPTION 54The 55.Nm 56utility sets the group ID of the file named by each 57.Ar file 58operand to the 59.Ar group 60ID specified by the group operand. 61.Pp 62The following options are available: 63.Bl -tag -width indent 64.It Fl H 65If the 66.Fl R 67option is specified, symbolic links on the command line are followed. 68(Symbolic links encountered in the tree traversal are not followed). 69.It Fl L 70If the 71.Fl R 72option is specified, all symbolic links are followed. 73.It Fl P 74If the 75.Fl R 76option is specified, no symbolic links are followed. 77.It Fl R 78Change the group ID for the file hierarchies rooted 79in the files instead of just the files themselves. 80.It Fl f 81The force option ignores errors, except for usage errors and doesn't 82query about strange modes (unless the user does not have proper permissions). 83.It Fl h 84If the file is a symbolic link, the group ID of the link itself is changed 85rather than the file that is pointed to. 86.It Fl v 87Cause 88.Nm 89to be verbose, showing files as the group is modified. 90.El 91.Pp 92The 93.Fl H , 94.Fl L 95and 96.Fl P 97options are ignored unless the 98.Fl R 99option is specified. 100In addition, these options override each other and the 101command's actions are determined by the last one specified. 102.Pp 103The 104.Ar group 105operand can be either a group name from the group database, 106or a numeric group ID. 107If a group name is also a numeric group ID, the operand is used as a 108group name. 109.Pp 110The user invoking 111.Nm 112must belong to the specified group and be the owner of the file, 113or be the super-user. 114.Sh DIAGNOSTICS 115The 116.Nm 117utility exits 0 on success, and >0 if an error occurs. 118.Sh COMPATIBILITY 119In previous versions of this system, symbolic links did not have groups. 120.Pp 121The 122.Fl v 123option is non-standard and its use in scripts is not recommended. 124.Sh FILES 125.Bl -tag -width /etc/group -compact 126.It Pa /etc/group 127group ID file 128.El 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