How do I get df to work on jump drive?

[Matthew Flaschen]

Knute Johnson wrote:
>> I think Matthew's point was that it doesn't appear to be from the output
>> you showed us, even though you told us it was. Are you sure it's mounted,
>> can you navigate to it and read files? What is the output of the command,
>> mount?
> 
> But I was wrong.  It was mounted at one point but not any more.  Is 
> there a simple way to confirm that a jump drive is mounted?

Yes, run df (or mount). :)  My preferred variant is df -Th.

Matt Flaschen