wizbrewery on getting channel values from api

Hi,  Id like a Linux box to get the last posted value of my channel on demand.  I understand I can get a range of values from here from api

eg http://api.thingspeak.com/channels/9/feeds.csv?start=2011-11-11%2010:10:10&end=2011-11-11%2011:11:11

I wish  to get the last value from a Linux box eg wget ...  What are my option from the api?  thanks in advance