Renaming files using math operations

Question

I am trying to rename some files using the bash command, but I do not know how to add an arithmetic expression / mathematical operation to a regular expression expression.

Input:

a000.png
a001.png
...

Ouput:

a010.png
a011.png
...

I am trying to add 10 to the names.

Some things I tried:

rename -n -e 's/a(\d+).png/a$1 + 10.png/' *
rename -n -e 's/a(\d+).png/a{$1 + 10}.png/' *
rename -n -e 's/a(\d+).png/a$($1 + 10).png/' *

Is there an easy way to do this?

Answer 1

. , sprintf, "%03d". , , , a, [a-zA-Z]* a. , * , (, *.png).

, , -n, .

rename -v 's/([a-zA-Z]*)([0-9]*)/$1.sprintf("%03d",$2+10)/e' *