ClassAds in Condor: Requirements and Rank (Example)
Friend = Owner == "tannenba" || Owner == "wright"
ResearchGroup = Owner == "jbasney" || Owner == "raman"
Trusted = Owner != "rival" && Owner != "riffraff"
Requirements = Trusted && ( ResearchGroup || LoadAvg < 0.3 && KeyboardIdle > 15*60 )
Rank = Friend + ResearchGroup*10