Please keep all messages on the list rather than replying only to the last poster. > Begin forwarded message: > > 'escputil --ink-level --raw-device /dev/usb/lp0' > > This is the sort of path I need. But it does not exist on my hard-drive, or anything similar Have you looked for 'dev' at the root of your hard drive? ls -a /Volumes/nameOfHardDrive