Questions[yum](server)

I keep getting answers like:

yum list installed | grep bind

or

rpm -qa | grep bind

But that is not accurate as I'm getting a list of few other bind packages like these:

bind-utils-9.8.2-0.17.rc1.el6_4.5.x86_64
rpcbind-0.2.0-11.el6.x86_64
bind-libs-9.8.2-0.17.rc1.el6_4.5.x86_64
samba-winbind-3.6.9-151.el6.x86_64
samba-winbind-clients-3.6.9-151.el6.x86_64
ypbind-1.20.4-30.el6.x86_64

That is not I wanted. Instead I would want to accurately check if bind core package has been installed. Eg. bind.x86_64 32:9.8.2-0.17.rc1.el6_4.6

I was hoping for something like:

yum check installed bind

But hopefully someone could shed the light.

In centos how do you answer yes automatically for yum install so that it is an unassisted install?

How can I tell the version of a package after doing a yum search?

e.g.

yum search rabbitmq

returns

rabbitmq-server.noarch : The RabbitMQ server

I need to know the version of this server.

When updating with yum i recieve the following message:

yum update
Loaded plugins: fastestmirror, priorities
Loading mirror speeds from cached hostfile
 * atomic: www7.atomicorp.com
 * base: mirror.de.leaseweb.net
 * extras: mirror.de.leaseweb.net
 * updates: mirror.de.leaseweb.net
118 packages excluded due to repository priority protections
Setting up Update Process
No Packages marked for Update

What does that mean ? How to install these packages ?

I'm using CentOS and Red Hat Enterprise Linux on a few machines without the GUI. How can I check if recently installed updates require a reboot? In Ubuntu, I'm used to checking if /var/run/reboot-required is present.