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31 .\" from: @(#)chgrp.1 8.3 (Berkeley) 3/31/94
32 .\" $NetBSD: chgrp.1,v 1.6 2013/12/17 09:54:08 apb Exp $
44 .Op Fl H | Fl L | Fl P
52 .Op Fl H | Fl L | Fl P
55 .Fl Fl reference=rfile
60 utility sets the group ID of the file named by each
64 ID specified by the group operand,
65 or to the group of the given
76 option is specified, symbolic links on the command line are followed.
77 (Symbolic links encountered in the tree traversal are not followed.)
81 option is specified, all symbolic links are followed.
85 option is specified, no symbolic links are followed.
87 Change the group ID for the file hierarchies rooted
88 in the files instead of just the files themselves.
90 The force option ignores errors, except for usage errors and doesn't
91 query about strange modes (unless the user does not have proper permissions).
95 is a symbolic link, the group of the link is changed.
99 to be verbose, showing files as they are processed.
104 is not given, unless the
110 on a symbolic link always succeeds and has no effect.
116 options are ignored unless the
119 In addition, these options override each other and the
120 command's actions are determined by the last one specified.
121 The default is as if the
123 option had been specified.
127 operand can be either a group name from the group database,
128 or a numeric group ID.
129 Since it is valid to have a group name that is numeric (and
130 doesn't have the numeric ID that matches its name) the name lookup
131 is always done first.
132 Preceding the ID with a ``#'' character will force it to be taken
137 must belong to the specified group and be the owner of the file,
138 or be the super-user.
140 Unless invoked by the super-user,
142 clears the set-user-id and set-group-id bits on a file to prevent
143 accidental or mischievous creation of set-user-id or set-group-id
148 utility exits 0 on success, and \*[Gt]0 if an error occurs.
150 .Bl -tag -width /etc/group -compact
165 utility is expected to be POSIX 1003.2 compatible.
169 option and the use of ``#'' to force a numeric group ID