dotfiles/bin/zfs-destroy-auto-snaps

#!/usr/bin/env bash

# From http://pastebin.com/3pLJZa2E

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