Foo Ji-Haw wrote: > I don't think exec() 'starts over again from scratch'. Here's a quote > from perlfunc: > > The |exec| <cid:[EMAIL PROTECTED]> function executes a > system command /and never returns/-- use |system| > <cid:[EMAIL PROTECTED]> instead of |exec| > <cid:[EMAIL PROTECTED]> if you want it to return. It > fails and returns false only if the command does not exist /and/ it is > executed directly instead of via your system's command shell (see below). > > I will say that exec() stops the current program and start on a new one > as per exec() parameters. But all these will happen in the same process > (ID).
The important thing to note is that the script you are running goes away entirely - stops executing (whether or not it uses the same pid or process space would most likely be OS dependent). The process (script) running is *replaced* by the newly exec'd image; whilst with the 'system' command the script continues to run with a child process being forked which it waits on. -- ,-/- __ _ _ $Bill Luebkert Mailto:[EMAIL PROTECTED] (_/ / ) // // DBE Collectibles Mailto:[EMAIL PROTECTED] / ) /--< o // // Castle of Medieval Myth & Magic http://www.todbe.com/ -/-' /___/_<_</_</_ http://dbecoll.tripod.com/ (My Perl/Lakers stuff) _______________________________________________ ActivePerl mailing list [email protected] To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
