The ebuild for Quake 3 Arena does not provide the command screen which is a required package to start the /etc/init.d/q3ded script. This package is available via portage. Reproducible: Always Steps to Reproduce: 1.emerge q3a 2./etc/init.d/q3ded 3. Actual Results: /sbin/runscript.sh: line 23: screen: command not found
USE=dedicated emerge quake3 does pull in screen and has for some time. You probably need to emerge sync and emerge quake3 again.