obrennan@CC3.CC.UMR.EDU (obrennan) (12/06/90)
Does SR10.2's WBAK allow you to write its output to a file instead of insisting on a tape/floppy device? The help file only discusses the latter. I have 1 Apollo on my ethernet. It has 500+ MB used on its local disk and only a puny 60 MB cart. tape drive. I'd like to back it up over the net to a floptical on a Sun server. Should I use tar instead? -- Mike Khaw ParcPlace Systems, Inc., 1550 Plymouth St., Mountain View, CA 94043 Domain=khaw@parcplace.com, UUCP=...!{uunet,sun,decwrl}!parcplace!khaw ------------------------------------------------------------------------------ The WBAK supports the "-to filename option" or if for some reason you need to further process the file (i.e. by a socket program) you can use "-stdout" option and pipe the WBAKed file. I personally would use TAR, but I believe you would lose the AEGIS ACL extensions if you do. Gerry O'Brennan Programmer/Analyst II Computing Services University of Missouri - Rolla ------------------------------ obrennan@apollo.cc.umr.edu c0022@umrvmb.umr.edu ------------------------------
tomg@hpcvlx.cv.hp.com (Thomas J. Gilg) (12/08/90)
Re: wbak -vs- tar If you use tar, consider the -A option to capture Apollo specific file attributes. As for which of tar/wbak is better, I've found wbak to be more solid than tar. Thomas Gilg tomg@cv.hp.com
rees@pisa.ifs.umich.edu (Jim Rees) (12/11/90)
In article <101020015@hpcvlx.cv.hp.com>, tomg@hpcvlx.cv.hp.com (Thomas J. Gilg) writes:
If you use tar, consider the -A option to capture Apollo specific file
attributes. As for which of tar/wbak is better, I've found wbak to be more
solid than tar.
In sr10.3 they fixed the bug where tar didn't truncate pre-existing files on
extraction (this caused problems with the emacs sources). But it's still
got the bug where it loses the file mode bits. I haven't tried '-A'.
I use one of the public domain versions of tar (John Gilmore's, but the gnu
one might be better) with extra hacks to make it preserve file type for obj
and coff. I've never been able to get a handle on how rbak/wbak works.
Besides, the format isn't portable.