#！/bin/bash
for i in {1..9}
do
   mv Test_0$i.bmp  Test_00000$i.bmp
done
for i in {10..99}
do
   mv Test_0$i.bmp  Test_0000$i.bmp
done
for i in {100..999}
do
   mv Test_0$i.bmp  Test_000$i.bmp
done