Shell script for global renaming

rename.sh

# 1. Recursively find all files in the directory with the extension ".js.cofee" and feeds the files into an input stream
# 2. Run `sed` to perform a string replace ('hello' => 'world') and create backup files
# 3. Find all the backup files and remove them recursively from the directory

find . -name "*.js.coffee" | while read a
do
  sed -iBACKUP 's/hello/world/' $a
done

find . -name "*BACKUP" -delete