How to rename with prefix/suffix?

Question

How do I do mv original.filename new.original.filename without retyping the original filename?

I would imagine being able to do something like mv

Answer 1

You could use the rename(1) command:

rename 's/(.*)$/new.$1/' original.filename

Edit: If rename isn't available and you have to rename more than one file, shell scripting can really be short and simple for this. For example, to rename all *.jpg to prefix_*.jpg in the current directory:

for filename in *.jpg; do mv "$filename" "prefix_$filename"; done;