destroy-zfs-auto-snaps-for-fs.sh

#!/usr/bin/env bash

if [ -n "${1}" ]
then
    echo "This will *RECURSIVELY* destroy all ZFS auto snapshots (not your manually created snaps). "
    echo "Parent and child filesystem snapshots to be destroyed: ${1}"
    echo "Continue? (y/n)"
    read ANS

    if [ $ANS == "y" ]
    then
        echo "Listing snapshots to be destroyed..."
        for ii in $(zfs list -r -t snapshot -o name ${1} | grep @zfs-auto-snap); do echo $ii; done
        echo "The above snapshots will be destroyed, sound like a plan? (y/n)"
        read PLAN
        if [ $PLAN == "y" ]
        then
            for ii in $(zfs list -r -t snapshot -o name ${1} | grep @zfs-auto-snap); do echo $ii; zfs destroy $ii; done
            echo "ZFS Auto snaps for ${1} destroyed!"
        else
            echo "Not a plan then... exiting."
        fi

    else
        echo "Not destroying... exit."
    fi

    echo "Done."
else
    echo "Exiting. You did not provide a ZFS filesystem.  (destroy-zfs-auto-snaps-for-fs.sh zpool/some/fs)"
fi