start()
{
    for peer in $cfg_sync_digest_peers; do
        /sbin/sync-digest "$peer" < /dev/null > /dev/null 2>&1 &
    done
}

stop()
{
    pids="$(echo $(ps | grep '/sbin/sync-digest ' | grep -v grep | cut -f1 -dr))"
    if [ -n "$pids" ]; then
        kill $pids
    fi
}