3 chgrp \- change file group
15 which should be a name known to the server holding the file.
17 A file's group can be changed by the file's owner, if the
18 owner is a member of the new group,
19 or by the leader of both
20 the file's current group and the new group.
26 option are synonyms; they specify that the
28 is to be set, rather than the group.
29 They are ineffectual unless the file server is in the bootstrap
30 state that permits changing file ownership.
32 .B /sys/src/cmd/chgrp.c