Enhancement to delete_snapshots about zfs-scripts HOT 2 CLOSED

Would you mind pasting a copy of the script with the changes?
This is breaking for me when trying to run on Solaris 11.4 December 2020 SRU.

from zfs-scripts.

I've moved away from Illumos for 5 years now :)
I highly recommend a "keep the last N snaphots" pattern instead of deleting by date.

Nowadays I use the following script to cleanup by the above mentioned pattern.

#!/bin/bash

ROOT_DS=slow
KEEP=3

for i in $(zfs list -H -r $ROOT_DS -o name); do
	for s in $(zfs list -S creation -H -t snapshot -o name $i | tail -n +${KEEP}); do
		echo "Deleting $s"
		zfs destroy $s
	done
done

tail in SunOS may be different, so you need to test. That syntax is used to display the last lines except .
few($KEEP)

from zfs-scripts.