diskutil erasevolume hfsx 'RAM Disk' `hdiutil attach -nomount ram://2097152`
Reference: http://www.tekrevue.com/tip/how-to-create-a-4gbs-ram-disk-in-mac-os-x/
diskutil erasevolume hfsx 'RAM Disk' `hdiutil attach -nomount ram://2097152`
Reference: http://www.tekrevue.com/tip/how-to-create-a-4gbs-ram-disk-in-mac-os-x/
ramdisk on ubuntu: