How to detect a player console command?

[LNATIC]

Hey guys, so as you can see on the title i'm trying to detect when a player puts a console command, I can detect when the player puts a say command like this:

hook.Add( "PlayerSay", "PlayerSayExample", function( ply, text, team )
	if ( string.sub( text, 1, 4 ) == "/all" ) then
		-- do something here
	end
end )

But, what's the way to detect a console command?

[James]

Concommand.Add