Hi,
a fast look at a generic path is to do a
find /home/myfiles -ls | pg
or
find /home/myfiles -ls > /tmp/mylist.
The -ls flag in find shows many attributes, and
if you give a look for files grater than others,
you find the cause.
Exists also -size flag, but the best is if you see by your
eyes them.
In case of / path, in the output, you see all files
of your host ( plus NFS mounted! ) and they may be a lot;
however usually the / files are at bottom of list.
To be more scientific, the right sol. is to use a special
flag in find command: it avoids that the command traverse
the filesystem which belong a path
find / -xdev -ls | pg
bye.
PS: last friday I found a 100% / fs with a file
/dev/rmto ( 10 Mb ) : a user had mismatched a 0 by o.