--- delete_snapshots.sh Sat Dec  5 10:03:02 2015
+++ /opt/custom/sbin/delete_snapshots   Sat Dec  5 10:02:00 2015
@@ -79,6 +79,8 @@
   platform='bsd'
 elif [[ "$unamestr" == 'Darwin' ]]; then
   platform='bsd'
+elif [[ "$unamestr" == 'SunOS' ]]; then
+  platform='sunos'
 else
   echo -e "unknown platform $unamestr 1>&2"
   exit 1
@@ -93,6 +95,8 @@

 if [[ "$platform" == 'linux' ]]; then
 compare_timestamp=`date --date="-$(echo $compare_seconds) seconds" +"%s"`
+elif [[ "$platform" == 'sunos' ]]; then
+compare_timestamp=$((`date +"%s"` - $compare_seconds))
 else
 compare_timestamp=`date -j -v-$(echo $compare_seconds)S +"%s"`
 fi
@@ -99,7 +103,7 @@

 # get a list of snapshots sorted by creation date, so that we get the oldest first
 # This will allow us to skip the loop early
-snapshots=`zfs list -H -t snapshot -o name,creation -s creation | grep $pattern`
+snapshots=`zfs list -H -t snapshot -o name,creation -s creation -p | grep $pattern`

 if [[ -z $snapshots ]]; then
   echo "no snapshots found for pattern $pattern"
@@ -112,14 +116,8 @@
 IFS=$'\n'
 for line in $snapshots; do
   snapshot=`echo $line | cut -f 1`
-  creation_date=`echo $line | cut -f 2`
+  creation_date_timestamp=`echo $line | cut -f 2`

-  if [[ "$platform" == 'linux' ]]; then
-    creation_date_timestamp=`date --date="$creation_date" "+%s"`
-  else
-    creation_date_timestamp=`date -j -f "%a %b %d %H:%M %Y" "$creation_date" "+%s"`
-  fi
-
   # Check if the creation date of a snapshot is less than our compare date
   # Meaning if it is older than our compare date
   # It is younger, we can stop processing since we the list is sorted by
@@ -130,10 +128,10 @@
       echo "DELETE: $snapshot from $creation_date"
       zfs destroy $snapshot
     else
-      echo "WOULD DELETE: $snapshot from $creation_date"
+      echo "WOULD DELETE: $snapshot"
     fi
   else
-    echo "KEEP: $snapshot from $creation_date"
+    echo "KEEP: $snapshot"
     echo "No more snapshots to be processed for $pattern. Skipping.."
     break
   fi