Whenever in doubt about an acroynm, ask Google "<acronym> webopedia" and click the first link :) http://www.webopedia.com/TERM/P/POSIX.html Considering I have no experience with it, someone else can fill in the details :) Andrew > i am very sorry for this newbie question, but i have read POSIX so > many times > now, but i still have no idea what its all about. > Since you you mentioned it in one sentence with ANSI C, its probably > a > programming standard, am I right?