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[20100112] sysupdate - an addition for etcupdate(8) (Update #3)
I wanted to update a few machines with latest netbsd-5 and -current today, and found that there's a certain lack of tools to aid in the process: we have etcupdate(8) and postinstall(8), but nothing to help extract the userland sets (let alone do the same thing for the kernel, esp. now that modules must be put into place, too).

To save me from re-typing the same commands, I've hacked a script "sysupdate" that's intended to run with a new kernel booted, and which will then 1) extract all the sets where mtree files are in /etc/mtree, and 2) run etcupdate for etc (and xetc, if in /etc/mtree).

Here's an example run: 

    % sh ~/tmp/sysupdate -s /usr/cvs/src-current/obj.i386/releasedir/i386/binary/sets -n
    ---------------------------------------------------------------------------
    Updating your userland now!
    ---------------------------------------------------------------------------

    New userland: NetBSD 5.99.23 (GENERIC) #0: Sun Jan 3 02:13:00 CET 2010
    Current kernel: NetBSD vmnetbsd6 5.99.23 NetBSD 5.99.23 (GENERIC) #0:
     Sun Jan 3 02:13:00 CET 2010 feyrer%mini.local@localhost
     :/usr/cvs/src-current/obj.i386/sys/arch/i386/compile/GENERIC i386

    Really update? (y/N) y
    Updating sets...
    Extracting base.tgz
    tar -plzx -C / -f base.tgz
    Extracting comp.tgz
    tar -plzx -C / -f comp.tgz
    Extracting games.tgz
    tar -plzx -C / -f games.tgz
    Extracting man.tgz
    tar -plzx -C / -f man.tgz
    Extracting misc.tgz
    tar -plzx -C / -f misc.tgz
    Extracting modules.tgz
    tar -plzx -C / -f modules.tgz
    Extracting tests.tgz
    tar -plzx -C / -f tests.tgz
    Extracting text.tgz
    tar -plzx -C / -f text.tgz
    Extracting xbase.tgz
    tar -plzx -C / -f xbase.tgz
    Extracting xcomp.tgz
    tar -plzx -C / -f xcomp.tgz
    Extracting xfont.tgz
    tar -plzx -C / -f xfont.tgz
    Extracting xserver.tgz
    tar -plzx -C / -f xserver.tgz
    Updating etc files...
    etcupdate -s /usr/cvs/src-current/obj.i386/releasedir/i386/binary/sets/etc.tgz \
     -s /usr/cvs/src-current/obj.i386/releasedir/i386/binary/sets/xetc.tgz
    Done.
    %
The script is available in the current-users@ mailing list archive.

Update: Chavdar Ivanov tells me that there's a package pkgsrc/sysutils/etcmanage that comes with a script INSTALL-NetBSD which does the same as mine (plus more). Seems that's not established enough that it's the communicated way for updating (yet?). Given that the script uses perl, maybe that's some time off. :-P

Another option that uses toosl that come with NetBSD out of the box (ksh!) is available here - thanks to Dalibor Gudzic for the hint and the script!

Update #2: Asmodehn sent me mail that he also has made a script for performing system updates. How about someone collect all these into one, and import something into NetBSD that at least provides minimal functionality?

Update #3: I'll place updates of the script at my software page.

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