Delete replaced packages on a local mirror

[David Knecht]

I am maintaining a private mirror for some Linux distributions. Now that 
the Fedora project have transfered Fedora Core 1 updates to the Fedora 
Legacy project I'd like to clean my Fedora Core 1 mirror by deleting 
some replaced packages.

Here is an example: These are the gaim packages that were mirrored in 
the last few months. The only package I would like to keep is the latest 
and greatest (here: gaim-0.82-0.FC1.i386.rpm) to save disk space:

My local directory: /var/ftp/pub/mirror/fedora/linux/core/updates/1/i386

-rw-r--r--    1 root     ftp       2587910 Feb 16  2004 
gaim-0.75-1.3.0.i386.rpm
-rw-r--r--    1 root     ftp       2693830 Apr  5 20:03 
gaim-0.76-1.FC1.i386.rpm
-rw-r--r--    1 root     ftp       2718003 May 19 15:10 
gaim-0.77-2.FC1.i386.rpm
-rw-r--r--    1 root     ftp       2970376 Jun 10 19:41 
gaim-0.78-1.FC1.i386.rpm
-rw-r--r--    1 root     ftp       3160982 Jun 25 04:10 
gaim-0.79-0.FC1.i386.rpm
-rw-r--r--    1 root     ftp       3274548 Jul 19 18:04 
gaim-0.80-1.FC1.i386.rpm
-rw-r--r--    1 root     ftp       3330601 Aug  6 22:18 
gaim-0.81-0.FC1.i386.rpm
-rw-r--r--    1 root     ftp       3330900 Aug 17 22:46 
gaim-0.81-1.FC1.i386.rpm
-rw-r--r--    1 root     ftp       3355334 Aug 26 04:46 
gaim-0.82-0.FC1.i386.rpm

I am looking for a script (or pointers to some related information) 
which does just that fully automated and ***savely*** for every package: 
delete old/replaced packages and keep only the latest (including source 
packages, debugging packages and header files).

While the above example is simple, there seem to be some more complex 
cases (just to name two of them):

-rw-r--r--    1 root     ftp       1192029 Feb 13  2004 
XFree86-ISO8859-14-100dpi-fonts-4.3.0-55.i386.rpm
-rw-r--r--    1 root     ftp       1054339 Feb 13  2004 
XFree86-ISO8859-14-75dpi-fonts-4.3.0-55.i386.rpm
-rw-r--r--    1 root     ftp       1238312 Feb 13  2004 
XFree86-ISO8859-15-100dpi-fonts-4.3.0-55.i386.rpm
-rw-r--r--    1 root     ftp       1084089 Feb 13  2004 
XFree86-ISO8859-15-75dpi-fonts-4.3.0-55.i386.rpm
-rw-r--r--    1 root     ftp       1184809 Feb 13  2004 
XFree86-ISO8859-2-100dpi-fonts-4.3.0-55.i386.rpm
-rw-r--r--    1 root     ftp       1051141 Feb 13  2004 
XFree86-ISO8859-2-75dpi-fonts-4.3.0-55.i386.rpm
-rw-r--r--    1 root     ftp       1233346 Feb 13  2004 
XFree86-ISO8859-9-100dpi-fonts-4.3.0-55.i386.rpm
-rw-r--r--    1 root     ftp       1082046 Feb 13  2004 
XFree86-ISO8859-9-75dpi-fonts-4.3.0-55.i386.rpm

or

-rw-r--r--    1 root     ftp        133378 Dec  4  2003 
rsync-2.5.7-2.i386.rpm
-rw-r--r--    1 root     ftp        133636 Aug 19 21:03 
rsync-2.5.7-5.fc1.1.i386.rpm
-rw-r--r--    1 root     ftp        133557 Jun  9 15:09 
rsync-2.5.7-5.fc1.i386.rpm

The XFree86* packages are of the same version/release while the rsync* 
packages have changed the naming convention.

Since the official public mirrors keep those old packages stored, 
mirroring with the option to delete locally stored packages which are 
not stored on the public mirrors anymore does not help.

Thanks, David