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. 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: src/usr.sbin/chown/chgrp.1,v 1.9.2.3 2001/08/16 15:55:44 ru Exp $ 33.\" $DragonFly: src/usr.sbin/chown/chgrp.1,v 1.7 2006/02/17 19:40:13 swildner Exp $ 34.\" 35.Dd March 31, 1994 36.Dt CHGRP 1 37.Os 38.Sh NAME 39.Nm chgrp 40.Nd change group 41.Sh SYNOPSIS 42.Nm 43.Op Fl fhvR 44.Ar group 45.Ar 46.Nm 47.Op Fl fv 48.Oo 49.Fl R 50.Op Fl H | Fl L | Fl P 51.Oc 52.Ar group 53.Ar 54.Sh DESCRIPTION 55The 56.Nm 57utility sets the group ID of the file named by each 58.Ar file 59operand to the 60.Ar group 61ID specified by the group operand. 62.Pp 63The following options are available: 64.Bl -tag -width indent 65.It Fl H 66If the 67.Fl R 68option is specified, symbolic links on the command line are followed. 69(Symbolic links encountered in the tree traversal are not followed). 70.It Fl L 71If the 72.Fl R 73option is specified, all symbolic links are followed. 74.It Fl P 75If the 76.Fl R 77option is specified, no symbolic links are followed. 78This is the default. 79.It Fl R 80Recursively change file group IDs. 81For each 82.Ar file 83operand that names a directory, 84.Nm 85shall change the group of the directory 86and all files in the file hierarchy below it. 87.It Fl f 88The force option ignores errors, except for usage errors and doesn't 89query about strange modes (unless the user does not have proper permissions). 90.It Fl h 91If the file is a symbolic link, the group ID of the link itself is changed 92rather than the file that is pointed to. 93.It Fl v 94Cause 95.Nm 96to be verbose, showing files as the group is modified. 97.El 98.Pp 99The 100.Fl H , 101.Fl L 102and 103.Fl P 104options are ignored unless the 105.Fl R 106option is specified. 107In addition, these options override each other and the 108command's actions are determined by the last one specified. 109.Pp 110The 111.Ar group 112operand can be either a group name from the group database, 113or a numeric group ID. 114If a group name is also a numeric group ID, the operand is used as a 115group name. 116.Pp 117The user invoking 118.Nm 119must belong to the specified group and be the owner of the file, 120or be the super-user. 121.Sh FILES 122.Bl -tag -width /etc/group -compact 123.It Pa /etc/group 124group ID file 125.El 126.Sh EXIT STATUS 127.Ex -std 128.Sh COMPATIBILITY 129In previous versions of this system, symbolic links did not have groups. 130.Pp 131The 132.Fl f 133and 134.Fl v 135options are extensions to the standard. 136.Sh SEE ALSO 137.Xr chown 2 , 138.Xr fts 3 , 139.Xr group 5 , 140.Xr passwd 5 , 141.Xr symlink 7 , 142.Xr chown 8 143.Sh STANDARDS 144The 145.Nm 146utility conforms to 147.St -p1003.2 148and 149.St -p1003.1-2004 . 150