Don't quote me on this but I thing Urban Terror MOD for Q3A is the equivalant of HL CS. I know there are alot of MODS for Q3A, but Urban Terror is the one that strikes me as being the closest. As for any Dedicated Servers games, it should just be a matter of running it in a terminal window. For Example I have created sripts for starting all mine up, then I just create shortcuts on my desktop. Here is one for UT2003 TDM that I use;
#!/bin/sh
cd /usr/local/games/ut2003/
./ucc server DM-Antalus?game=XGame.XTeamMatch?mutator=UnrealGame.MutLowGrav?weaponstay=true?translocator=false?ff=0?Gamespeed=130?maxplayers=10?minplayers=7?spectators=0?timelimit=20?Fraglimit=50?AdminName=-=REL!c2K=-?Adminpassword=PaSSwOrD ini=ut2003tdm.ini log=ut2003tdm.log
It will vary because of Game differences, you just have to do some reading and it should tell you how to started a dedicated game. Hope this Helps.