...
> filenames have the form <PKG>-<VER>-<REV>.<EXT>
> e.g.: ab-cd-1.23a-45678.tar.gz
> Field Separators: - - .
> Field Contents: ab-cd 1.23a 45678 tar.gz
...
> - Counting to the right from that point, the first '.' encountered
> separates REV from EXT. Whitespace to the right of EXT delimits it.
> - Counting to the left from that point, the first '-' encountered
> separates PKG from VER Whitespace to the left of PKG delimits it.
FWIW, _all_ RedHat (i386) packages conform to the regular expression
sed "/^${PKG}-[^-]*-[^-]*\.i386\.rpm$/p"`
PKG - VER - REV . EXT
