How to massively rename files in a folder in Shell using a regular expression?

Question

Command line

Can you please tell me how to rename files from arg_* to exp_* in a certain folder using find and mv?

Answer 1

#!/bin/bash
for f1 in `find /temp -name 'arg_*'`; do
   f2=${f1/arg_/exp_}
   echo "$f1 -> $f2"
   mv $f1 $f2
done