I just got mathematica 6.0.1 working on FreeBSD 7. There are some addenda required. 10.3.1) Instead of searching for Linux) and replacing with FreeBSD) it may be better to search for SystemIDList="Unknown";; and replace with SystemIDList="Linux";; 10.3.2) Remind users to change /usr/bin/sh to /compat/linux/bin/sh here as well. Same as above.