I have two servers that are already installed with RHEL 5 ... I will call them Server A and Server B.

I have been asked to re-configure Server A so that its installed packages match those installed on Server B. What is the best (and hopefully easiest way) to accomplish this?

I have generated a list of currently installed packages on both server using the command:

yum list installed

Is that the right command? When I compare the output side by side the task seems daunting and I'm considering just starting over and re-loading Server A. I have ~ 620 packages installed on Server B and ~ 1200 packages installed on Server A.

Any suggestions?

Thanks,
Bungle

Try redirecting the output of the command to a file on each machine and then using diff with the "-y" (or "--side-by-side") option.