Linux has great command line utilities for copying binary data directly to a drive. The best tool for this is dd.

Open up a Linux terminal and run these commands

journalctl -f

Put your CF card into a reader attached to your Linux PC. You should see the device name pop up

exit journalctl with ctrl-c

Decompress your image

sudo xz -d <image name>

Write your image to the CF card

sudo dd if=<image name> of=<drive name> bs=1M

example:

sudo dd if=vamp-Fedora-Minimal-armhfp-22-20150627-sda.raw of=/dev/sdb bs=1M