Bulk rename files on Centos 7?

Question

System administration

Given:

a-catalog/
   a.component.html
   a.component.ts
   a.component.spec.ts
   a.component.css

Should be renamed to:

b-catalog/
   b.component.html
   b.component.ts
   b.component.spec.ts
   b.component.css

How to make it more convenient and easier? And there will be many such renames, this is just one directory.

Answer 1

yum install mmv

mmv 'a.*' 'b.#1'

Answer 2

A full-fledged regexp is in the standard command But if you understand and look for a break, put gprename ??