How do you use wget to download most up to date file on a site?

Hello I am trying to use wget to download the most update to day McAfee patch and I am having issues singling out the .tar file. This is what I have:

wget -q -O - ftp://ftp.mcafee.com/pub/antivirus/datfiles/4.x/ | grep -o -m 2 "avvdat-[^']*"

However when I run the above command it gives me:

avvdat-8065.tar">avvdat-8065.tar</a>  (95191040 bytes)
avvdat-8066.tar">avvdat-8066.tar</a>  (95385600 bytes)

When I need it to just be the most recent.tar file in between the <a> </a> which in this case would be avvdat-8066.tar. Can someone please help me out with greping the correct .tar I am not too good with regex or sed.

Answer

Try this,

wget $(wget -q -O - ftp://ftp.mcafee.com/pub/antivirus/datfiles/4.x/ | grep -Eo "ftp://[^"]+" | sort | tail -n1)