berg@marvin.e17.physik.tu-muenchen.de (Stephen R. van den Berg) (04/19/91)
I'm trying to update SunOs to 4.1.1 by simply untaring everything on top of the old things. So far things are going fine, and I managed to update all executables (including the dynamically linked libraries) while keeping the system running (multiuser). There are a few sensitive files in /etc and some other obscure places that I have modified from the original distribution (of the old SunOs). Now I want to restore certain tapes, but I want to make sure that only newer files will be extracted. That is, files like /etc/passwd should *not* be overwritten. Now, is there an obvious way to accomplish this? I have ploughed through the manuals and man pages to no avail. Thanks. -- Sincerely, berg@marvin.e17.physik.tu-muenchen.de Stephen R. van den Berg. "I code it in 5 min, optimize it in 90 min, because it's so well optimized: it runs in only 5 min. Actually, most of the time I optimize programs."
fingerhu@ircam.fr (Michel Fingerhut) (04/20/91)
Use gnutar. It has an option for this.