sh tiny
HOST=l_samenv@samenv
DIR=boxes/images
IMGDAT=apumaster_$(date +'%Y-%m-%d').lz4
read -p "image name to write to $HOST:$DIR [$IMGDAT]: " IMG
if [ -z "$IMG" ]; then
   IMG=$IMGDAT
fi
echo "copy image to $HOST:$DIR/$IMG (takes about 10 min) ..."
dd if=/dev/sda bs=512k | lz4 | ssh $HOST "dd of=$DIR/$IMG bs=512k"