This program is a graphical sudo for MacOSX. You give it a command to run and it brings up the system password box. When an administrator's password is typed in the command is run as root. A sample running is MacSudo -p MyApp rm -rf tempDir Which would put "On behalf of MyApp, MacSudo requires you to type in your password" into the authentication box that comes up. Upon a successful authentication, it would run "rm -rf tempDir" as root. If the -p option isn't given then it will leave out the "On behalf on ___, " and just mention MacSudo.