#!/bin/bash

set -eu

if [ -z "${1:-}" ] || [ -z "${2:-}" ]; then
    echo "Usage: $0 label keep"
    exit 1
fi

label="$1"
keep="$2"

zfs list -H -o "backup:${label},name" | \
    awk -F'\t' '$1 == "on" { print $2 }' | \
    xargs -d '\n' zfs-auto-snapshot --prefix=znap --label="$label" --keep="$keep"