EC2インスタンスの有効なKernel IDの取得

# ec2-describe-images --owner amazon --region ap-northeast-1 | grep "amazon\/pv-grub-hd0" | awk '{ print $1, $2, $3, $5, $7 }'
IMAGE aki-196bf518 amazon/pv-grub-hd00_1.04-i386.gz available i386
IMAGE aki-1f6bf51e amazon/pv-grub-hd00_1.04-x86_64.gz available x86_64
IMAGE aki-136bf512 amazon/pv-grub-hd0_1.04-i386.gz available i386
IMAGE aki-176bf516 amazon/pv-grub-hd0_1.04-x86_64.gz available x86_64
IMAGE aki-3e99283f amazon/pv-grub-hd00_1.03-i386.gz available i386
IMAGE aki-40992841 amazon/pv-grub-hd00_1.03-x86_64.gz available x86_64
IMAGE aki-42992843 amazon/pv-grub-hd0_1.03-i386.gz available i386
IMAGE aki-44992845 amazon/pv-grub-hd0_1.03-x86_64.gz available x86_64