Sudo runs commands as another user, provided the system sudo implementation is setup to enable this. This does not allow running applications securely, simply it allows the programmer to run a program as another user (suid) using the sudo tools rather than suidperl. Suidperl is not generally recommended for secure operation as another user. While sudo itself is a single point tool to enable one user to execute commands as another sudo does not itself make you any more or less secure. WWW: http://search.cpan.org/dist/Sudo/