Renaming existing multiple jpg variants according to tags of the same parent cr2

[Jom]

Hello.

I have
20170209_201601.CR2
and
20170209_201601_1.jpg
20170209_201601_2.jpg
20170209_201601_3.jpg

How do I rename these existing multiple jpg variants according to the tags of the parent 20170209_201601.CR2?

In other words, I need to rename all files with first part of the name that match of name of the parent CR2.

Thanks.

[Phil Harvey]

You can use -tagsfromfile %d%-.2f.CR2 to copy tags from a CR2 file with the same name but with the last 2 characters removed.

[Jom]

Thanks.
I made a bad (simple) example.
There can be anything at the end of the jpg name.

20170209_201601_kjhlkjh_987697868.jpg
20170209_201601_kjh_2342_mnm.jpg

and such example

lkjhkjh_20170209_201601_kjh_2342_mnm.jpg