Change the owner of a file
Integer_Type chown (String_Type file, Integer_Type uid, Integer_Type gid)
The chown function is used to change the user-id and group-id of
file to uid and gid, respectively. It returns
zero upon success and -1 upon failure, with errno
set accordingly.
On most systems, only the super user can change the ownership of a file.
Some systems do not support this function.
chmod, stat_file