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Re: [vox-tech] Debian Unstable - apt strangeness
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Re: [vox-tech] Debian Unstable - apt strangeness

On Fri, Aug 13, 2004 at 05:14:53PM -0700, Rick Moen wrote:
> Quoting Matt Roper (matt@mattrope.com):
> > I know that apt-get by itself won't touch /var/lib/dpkg/available
> Interesting.  I most certainly didn't ever notice that before.  Learn
> something new every day!  So,  does apt-get update put new
> available-packages data only in /var/lib/apt/lists, then?

I just did some experimenting with strace and here's what it looks like
is happening to me:

    1.) apt-get calls /usr/lib/apt/methods/FOO (where FOO is "http,"
        "ftp," etc.) to download the /var/lib/apt/lists/ files.
    2.) The /var/lib/apt/lists/ files get opened read only
    3.) /var/cache/apt/pkgcache.bin and /var/cache/apt/srcpkgcache.bin
        get opened R/W.  I assume that the package information from
        the list files gets stored in these binary files for quick

It also looks like the code that handles 'dselect update' is the script
/usr/lib/dpkg/methods/apt/update; you can see it updating the available
database after running apt-get update.



* Matt Roper <matt@mattrope.com>                *
* http://www.mattrope.com                       *
* PGP Key: http://www.mattrope.com/mattrope.asc *
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