I have a 23 gig partition and I am not sure what is consuming the disk I
have about 3 gigs free.  I know that there is about 10 gigs of data that
I know of otherwise I am not sure what is consuming it. 

What is the best way to get a top down look to see what is chewing up
all of the disk space.  


Are there any system files like logfiles etc that can be deleted that
can get very big?

I have squid on this box and I have configured squid.conf so that I do
not use a store.log which was a very large file; I have deleted that
file.

How can I tell how much space is take up by the one database I have
which is specific to squid logs; it is a mysql database.  



Jim