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: src/usr.sbin/chown/chgrp.1,v 1.9.2.3 2001/08/16 15:55:44 ru Exp $ 37.\" $DragonFly: src/usr.sbin/chown/chgrp.1,v 1.7 2006/02/17 19:40:13 swildner Exp $ 38.\" 39.Dd March 31, 1994 40.Dt CHGRP 1 41.Os 42.Sh NAME 43.Nm chgrp 44.Nd change group 45.Sh SYNOPSIS 46.Nm 47.Op Fl fhvR 48.Ar group 49.Ar 50.Nm 51.Op Fl fv 52.Oo 53.Fl R 54.Op Fl H | Fl L | Fl P 55.Oc 56.Ar group 57.Ar 58.Sh DESCRIPTION 59The 60.Nm 61utility sets the group ID of the file named by each 62.Ar file 63operand to the 64.Ar group 65ID specified by the group operand. 66.Pp 67The following options are available: 68.Bl -tag -width indent 69.It Fl H 70If the 71.Fl R 72option is specified, symbolic links on the command line are followed. 73(Symbolic links encountered in the tree traversal are not followed). 74.It Fl L 75If the 76.Fl R 77option is specified, all symbolic links are followed. 78.It Fl P 79If the 80.Fl R 81option is specified, no symbolic links are followed. 82This is the default. 83.It Fl R 84Recursively change file group IDs. 85For each 86.Ar file 87operand that names a directory, 88.Nm 89shall change the group of the directory 90and all files in the file hierarchy below it. 91.It Fl f 92The force option ignores errors, except for usage errors and doesn't 93query about strange modes (unless the user does not have proper permissions). 94.It Fl h 95If the file is a symbolic link, the group ID of the link itself is changed 96rather than the file that is pointed to. 97.It Fl v 98Cause 99.Nm 100to be verbose, showing files as the group is modified. 101.El 102.Pp 103The 104.Fl H , 105.Fl L 106and 107.Fl P 108options are ignored unless the 109.Fl R 110option is specified. 111In addition, these options override each other and the 112command's actions are determined by the last one specified. 113.Pp 114The 115.Ar group 116operand can be either a group name from the group database, 117or a numeric group ID. 118If a group name is also a numeric group ID, the operand is used as a 119group name. 120.Pp 121The user invoking 122.Nm 123must belong to the specified group and be the owner of the file, 124or be the super-user. 125.Sh FILES 126.Bl -tag -width /etc/group -compact 127.It Pa /etc/group 128group ID file 129.El 130.Sh DIAGNOSTICS 131.Ex -std 132.Sh COMPATIBILITY 133In previous versions of this system, symbolic links did not have groups. 134.Pp 135The 136.Fl f 137and 138.Fl v 139options are extensions to the standard. 140.Sh SEE ALSO 141.Xr chown 2 , 142.Xr fts 3 , 143.Xr group 5 , 144.Xr passwd 5 , 145.Xr symlink 7 , 146.Xr chown 8 147.Sh STANDARDS 148The 149.Nm 150utility conforms to 151.St -p1003.2 152and 153.St -p1003.1-2004 . 154