silly question, is there a **UNIX** command to rename files from the format:

> 
> "particles\_00090.png" "particles\_00091.png" .... "particles\_00131.png"
> 
> 
> 

to 

> 
> "particles-00000.png" "particles-00001.png" .... "particles-00041.png"
> 
> 
> 

Basically, I'd like to subtract the value **90** to the file suffix whilst keeping the number of numeric values (in the case above we have 5 zeroes) and convert underscore to dashes.