How to recover programs from install disks

[John Gayman]

In article <1990May31.153301.2562 at monymsys.uucp>, david at monymsys.uucp (David Kozinn) writes:
> While playing around with the accounting facilities on my Sys V/386 system, I
> managed to clobber /usr/lib/acct/acctcon2, one of the programs used to
> process accounting records. While I've backed up any useful data on the
> system, I never did a full system backup because I figured that I could always
> recover any clobbered programs from the installation disks. Well, I tried to
> do that today and I just can't figure out how. Obviously, I don't want to


   When you execute pkginstall, it actually just goes and runs a shell
 script called /etc/installit. Looking at this script you can see there
 are several forms of cpio it will use depending on what you were doing.
 Mostly they are pretty similar and will serve your purpose. Here they are
 from installit:


     cpio -iu </dev/rdsk/f0q15dt 2>/dev/null

     cpio -icBdmu $1 </dev/rdsk/f0q15d 2>/dev/null

     cpio -icBdmu </dev/rdsk/f0q15d

   
   As you can see the key is using /dev/rdsk/f0q15d. I have selectively
 restored many files from the distribution disks this way and it works
 great. Good luck.


						John


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