A468
No.
Quote Originally Posted by Combat > Actions in Combat > Spell-Like Abilities
Using a spell-like ability works like casting a spell in that it requires concentration and provokes attacks of opportunity.
Quote Originally Posted by Rage
While raging, a barbarian cannot use any Charisma-, Dexterity-, or Intelligence-based skills (except for Balance, Escape Artist, Intimidate, and Ride), the Concentration skill, or any abilities that require patience or concentration, nor can he cast spells or activate magic items that require a command word, a spell trigger (such as a wand), or spell completion (such as a scroll) to function.
A476 partial
Not within the core rules. Since this deals more with knowledge than with RAW, you may want to start a new thread to get an answer to this question.