Date: Fri, 5 Jan 2001 18:09:40 -0700 From: "Duke Normandin" <01031149@3web.net> To: questions@FreeBSD.ORG Subject: Re: system management Message-ID: <20010106012930.5E06D37B400@hub.freebsd.org>
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>On Friday January 05, 2001 09:31, Mike Meyer wrote: >> Duke Normandin <01031149@3web.net> types: >> > On 4 Jan 01 at 10:34, Mike Meyer wrote: >> > >> But, can we really in FreeBSD update a 3.X release to an 4.X or >> > >> 5.X doing a CVSUP and then a make world ? >> > > >> > >Yes. If you're going from an a.out system to an elf system, you'll need >> > >to do a "make ugprade" as well. >> > >> > I've waited a long time for an opportunity to ask about what the >> > "a.out" / "elf" systems are all about. Would you be so kind....? >> > Tia! >> Mike.... >> Two different formats for executables - among other things. a.out >> was the original (well, it dates back to v6) Unix executable format. >> Those were just loaded and executed. The "magic number" they started >> with was a branch around the executable header information. ELF >> provides a lot more flexibility (for instance, both link and shared >> libraries and core files can be stored as ELF files), but requires >> more support from the kernel exec call. > Thanks for the tid-bit! I'm too green to fully understand so..... Tim... >Nice explanation. (In other words I that don't know that much about it >could understand the explanation. :) There's also more info in the FAQ >http://www.freebsd.org/FAQ/book.html#AOUT-ELF Thanks for the URL! I was going there this P.M. for a look-see. ;) -duke Calgary,Alberta, Canada To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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