visudo

From Wikipedia, the free encyclopedia

visudo is a unix command that edits the sudoers file in a safe fashion, namely by preventing multiple simultaneous edits with locks, performing sanity checks, and checking for parse errors. The sudoers file allows listed users access to execute to a subset of commands while having the privileges of the root user.

for more info see the web page http://www.gratisoft.us/sudo/man/visudo.html