Linux创建ramdisk
19 Feb 2013dd if=/dev/zero of=/dev/rd/1 bs=1k count=9216
mke2fs -vm0 /dev/rd/1 9216
mount /dev/rd/1 /tmp/
umount -v /tmp
dd if=/dev/zero of=/dev/rd/1 bs=1k count=9216
mke2fs -vm0 /dev/rd/1 9216
mount /dev/rd/1 /tmp/
umount -v /tmp