A user and group contains a dash: abc-def. When I try to use chown I get an error: chown abc-def.abc-def * -R chown: invalid user: `abc-def.abc-def' the user is valid and it should work... how can ...
I try to chown the owner of a file to root, but I can't. I'm doing this as root. I get the following message: chown: changing ownership of `ps': Operation not permitted