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42 .Op Fl H | Fl L | Fl P
49 utility sets the group ID of the file named by each
53 ID specified by the group operand.
55 The following options are available:
56 .Bl -tag -width indent
60 option is specified, symbolic links on the command line are followed
61 and hence unaffected by the command.
62 (Symbolic links encountered during traversal are not followed.)
66 option is specified, all symbolic links are followed.
70 option is specified, no symbolic links are followed.
73 Change the group ID of the file hierarchies rooted in the files,
74 instead of just the files themselves.
75 Beware of unintentionally matching the
77 hard link to the parent directory when using wildcards like
80 The force option ignores errors, except for usage errors and does not
81 query about strange modes (unless the user does not have proper permissions).
83 If the file is a symbolic link, the group ID of the link itself is changed
84 rather than the file that is pointed to.
88 to be verbose, showing files as the group is modified.
91 flag is specified more than once,
93 will print the filename, followed by the old and new numeric group ID.
95 File system mount points are not traversed.
103 options are ignored unless the
106 In addition, these options override each other and the
107 command's actions are determined by the last one specified.
111 operand can be either a group name from the group database,
112 or a numeric group ID.
113 If a group name is also a numeric group ID, the operand is used as a
118 must belong to the specified group and be the owner of the file,
119 or be the super-user.
129 then the current filename as well as the old and new group names are
132 .Bl -tag -width /etc/group -compact
139 In previous versions of this system, symbolic links did not have groups.
145 options are non-standard and their use in scripts is not recommended.
156 utility is expected to be