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.\" 37.Dd March 31, 1994 38.Dt CHGRP 1 39.Os BSD 4.2 40.Sh NAME 41.Nm chgrp 42.Nd change group 43.Sh SYNOPSIS 44.Nm chgrp 45.Oo 46.Fl R 47.Op Fl H | Fl L | Fl P 48.Oc 49.Op Fl f 50.Op Fl h 51.Ar group 52.Ar files ... 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 62Options: 63.Bl -tag -width Ds 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.El 87.Pp 88The 89.Fl H , 90.Fl L 91and 92.Fl P 93options are ignored unless the 94.Fl R 95option is specified. 96In addition, these options override each other and the 97command's actions are determined by the last one specified. 98.Pp 99The 100.Ar group 101operand can be either a group name from the group database, 102or a numeric group ID. 103If a group name is also a numeric group ID, the operand is used as a 104group name. 105.Pp 106The user invoking 107.Nm 108must belong to the specified group and be the owner of the file, 109or be the super-user. 110.Pp 111The 112.Nm 113utility exits 0 on success, and >0 if an error occurs. 114.Sh COMPATIBILITY 115In previous versions of this system, symbolic links did not have groups. 116.Sh FILES 117.Bl -tag -width /etc/group -compact 118.It Pa /etc/group 119Group ID file 120.El 121.Sh SEE ALSO 122.Xr chown 2 , 123.Xr fts 3 , 124.Xr group 5 , 125.Xr passwd 5 , 126.Xr symlink 7 , 127.Xr chown 8 128.Sh STANDARDS 129The 130.Nm 131utility is expected to be 132.St -p1003.2 133compatible. 134