B="56"  ------------------------ ⑤
echo "A=$A, B=$B"
if [ "$A" -lt "$B" ]; then ----- ⑥
    echo "-lt operator: True"
else
    echo "-lt operator: False"
fi

if [ "$A" -gt "$B" ]; then ----- ⑦
    echo "-gt operator: True"
else
    echo "-gt operator: False"
fi

if [ "$A" -ge "$B" ]; then ----- ⑧
    echo "-ge operator: True"
else
    echo "-ge operator: False"
fi