A hack to do something with Administrator privileges in Cocoa. This saves you from implementing the fairly complicated route of getting the administrative right using BetterAuthorizationSample example

authorization_cocoa.m

NSDictionary *error = [NSDictionary dictionary];
NSAppleScript *run = [[NSAppleScript alloc]
    initWithSource:@"do shell script "gem install calabash-cucumber;" with administrator privileges"];
[run executeAndReturnError:&error];