You can redistribute and/or modify it under the Ruby's License.
See http://www.ruby-lang.org/en/LICENSE.txt or LICENSE.txt in the Ruby 
package. Both of them are completely equivalent.

how to use the "settime" library is described in "settime.c".

"setup.rb" which this package contains is licensed under the GNU LGPL.
If you want to get more information, please see "LGPL" file.

