--register command aliases:
--introduce some short names for commands you use often
axi_shortcut=function(name, from)
   if minetest.chatcommands[from] then
      minetest.register_chatcommand(name, minetest.chatcommands[from])
   end
end
minetest.after(0,function()
axi_shortcut("tp", "teleport")
axi_shortcut("chk", "rollback_check")
axi_shortcut("day", "time 4700")
end
)

minetest.register_chatcommand("?", {
    params = "<players>",
    description = "Get ip and accounts names",
    privs = {ban=true},
    func = function(name, param)
        if not param then
            minetest.chat_send_player(name, "Player " .. param .. " was not found")
            return
        end
	        ipnames.command_whois(name,param)
        return
    end
})