Linux instance batch modification picture file name

1, such as 10.11 batch of such directories, 10.11 10.12 and so on

Then the picture inside the. jpg file to be modified to correspond to the date. jpg, that is to say, programming 1011.jpg file name

Examples are as follows:

#!/bin/bash
for filename in ' ls '
Do
Echo $filename
CD $filename
file1=${filename%%.*}
file2=${filename##*.}
MV *.jpg $file 1$file2.jpg

Cd..
Done

Reference article: http://blog.chinaunix.net/uid-1757778-id-3162034.html

Linux instance batch modification picture file name