Made a simple wrapper script to dump the output to a log file.

diff --git a/zfs-snapshot-totals-cron b/zfs-snapshot-totals-cron
new file mode 100755 (executable)
index 0000000..e2eb9ed
--- /dev/null
+++ b/zfs-snapshot-totals-cron
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+snapshot_totals="/usr/local/etc/bin/zfs-snapshot-totals"
+logfile="/var/log/zfs-snapshot-totals.log"
+
+date >> $logfile
+$snapshot_totals >> $logfile
+echo >> $logfile