Or in your favorite UNIX flavor: export MEM_STICK=/Volumes/Data # Replace this with the path to your memory stick mkdir $MEM_STICK/DCIM cd /tmp dd if=/dev/z

Or in your favorite UNIX flavor: export MEM_STICK=/Volumes/Data # Replace this with the path to your memory stick mkdir $MEM_STICK/DCIM cd /tmp dd if=/dev/zero of=big.file block=1024 count=5242880 wget http://imgur.com/Y4Ixn.jpg http://imgur.com/Y4Ixn.jpg cat Y4Ixn.jpg big.file > $MEM_STICK/DCIM/big.file.jpg