Let's say I have files in side a folder named
abc001.jpg
abc002.jpg
abc003.jpg
abc004.jpg
abc005.jpg
.
.
.
acb999.jpg
Let's say group1 is
- abc001.jpg
- abc002.jpg
- abc005.jpg
- abc010.jpg
and group2 is
- abc003.jpg
- abc004.jpg
- abc009.jpg
- abc111.jpg
I want to add a prefix like gr1 and gr2 according to the group they belong to, like:
- gr1abc001.jpg
- gr1abc002.jpg
- gr1abc005.jpg
- gr1abc010.jpg
- gr2abc003.jpg
- gr2abc004.jpg
- gr2abc009.jpg
I need to do it using a shell script.
