Checking VBox revision number from the Download Index

[Intrepid Ibex]

So my little 'task' is to grep/cat/sed/whatever the revision number of VirtualBox from the Download Index file (http://download.virtualbox.org/virtualbox/4.0.0_BETA3/) in order to automate my 'auto-updating' VirtualBox 'packaging script'.

I've gotten to the part where I've wget'd the index file, grepped it to only show one line and now I (somehow) need to get the revision number (68940) out of that line. Of course the version and revision numbers ('4.0.0BETA3' and '68940') change every time a new version comes up so I'd need something robust for that matter.

So here's the line:

<A HREF="Oracle_VM_VirtualBox_Extension_Pack-4.0.0_BETA3-68940.vbox-extpack" NAME="Oracle_VM_VirtualBox_Extension_Pack-4.0.0_BETA3-68940.vbox-extpack"><IMG SRC="/mc-icons/unknown.gif" ALT="[ ]" BORDER=0> Oracle_VM_VirtualBox_Extension_Pack-4.0.0_BETA3-68940.vbox-extp+</A> 14-Dec-2010 11:07 3M

Thanks for your time,
'Intrepid Ibex' (I hate my nickname but that's all I got)

[daqron]

Is there a particular programming language you're working with here? Here's a perl example (relevant regex in red):

if ( $long_string =~ m/Pack-(.*?)-(.*?)\./ ) {
print "Version: $1 \n";
print "Rev: $2 \n";
}
That ought to return:

Version: 4.0.0_BETA3
Rev: 68940
This assumes the naming convention remains consistent, matching everything between "Pack-" and the first hyphen for the version, and everything after the hyphen and before the period for the revision.

[Intrepid Ibex]

Yes, I just wanted to do this with any scripting language (which I told on the first sentence) as long as it gets the job done.

Thanks for the post, however I already managed to do this myself with grep and cut:

wget ${_url} -qO - |grep pack |cut -d "v" -f1 |cut -c "51-62"| cut -d "-" -f2

[Intrepid Ibex]

[Sigh, double.]