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.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. 78.It Fl R 79Change the group ID for the file hierarchies rooted 80in the files instead of just the files themselves. 81.It Fl f 82The force option ignores errors, except for usage errors and doesn't 83query about strange modes (unless the user does not have proper permissions). 84.It Fl h 85If the file is a symbolic link, the group ID of the link itself is changed 86rather than the file that is pointed to. 87.El 88.Pp 89The 90.Fl H , 91.Fl L 92and 93.Fl P 94options are ignored unless the 95.Fl R 96option is specified. 97In addition, these options override each other and the 98command's actions are determined by the last one specified. 99.Pp 100The 101.Ar group 102operand can be either a group name from the group database, 103or a numeric group ID. 104If a group name is also a numeric group ID, the operand is used as a 105group name. 106.Pp 107The user invoking 108.Nm 109must belong to the specified group and be the owner of the file, 110or be the super-user. 111.Sh DIAGNOSTICS 112The 113.Nm 114utility exits 0 on success, and >0 if an error occurs. 115.Sh COMPATIBILITY 116In previous versions of this system, symbolic links did not have groups. 117.Sh FILES 118.Bl -tag -width /etc/group -compact 119.It Pa /etc/group 120group ID file 121.El 122.Sh SEE ALSO 123.Xr chown 2 , 124.Xr fts 3 , 125.Xr group 5 , 126.Xr passwd 5 , 127.Xr symlink 7 , 128.Xr chown 8 129.Sh STANDARDS 130The 131.Nm 132utility is expected to be 133.St -p1003.2 134compatible. 135