One liner to rename bunch of files

Question

I was looking for a linux command line one-liner to rename a bunch of files in one shot.

pattern1.a  pattern1.b pattern1.c ...

Once the com

Answer 1

for i in pattern1.*; do mv -- "$i" "${i/pattern1/pattern2}"; done

Before you run it, stick an echo in front of the mv to see what it would do.