BENGHAZI (Reuters) - Armed groups attacked military posts in Libya's second city Benghazi with bombs and a rocket-propelled grenade, an army commander said on Saturday. Nearly two years after the uprising that ended Muammar Gaddafi's 42-year rule, the government still exerts little control over the armed brigades that helped overthrow him. Oil-producer Libya is largely split into fiefdoms of such brigades that are competing for influence. No one was hurt in the four overnight attacks on three Benghazi army posts, said the military commander, Hamed Belkhair. ...