To list the package groups available in yum, you would use yum grouplist. When you are adding groups to your kickstart file, you use the id of the group not the name, so this *very* simple script lists the groups with their ids.
My problem is that I wanted to filter access on a raid array instead of doing it on the switch. I could login to the switch and figure out the linux hba's wwn (world-wide-name), but I thought there must be a way to get it from the linux machine directly.
I had a problem with a filesystem that was full on a vm. The vm's hard drive is just a lun on a fibre channel. So I resized the lun on the raid controller. The devices (/dev/sdx) for the drive noticed the new size after I did the usual scan and partprobe, but the multipath device didn't see the new size and was working off the old size. After some digging I found this page on how to get multipathd to notice the new size. I'll summarise here.
While attempting to monitor traffic on a qlogic Sanbox 5602 I noticed that the traffic (connUnitPortStatCountTxObjects) was being returned as a hexadecimal value with spaces in it (e.g. Hex-STRING: 00 00 00 00 01 4F E1 1B).