A friend emailed me tonight asking how he could create a file on his Linux system of a specific size, but with no real data in it...
He could have googled... but. Here's a run down:
dd if=/dev/zero of=somefile bs=1024 count=1048576
dd - the command
if - input file (zero in this case)
of - output file
bs - byte size
count - times
So the above is a 1GB file filled with randomness.
