sed -i ‘s/fengo/dressholic/g’ *  sed -i ‘s/Fengo/Dressholic/g’ *  search folders for file type recurisvely and replace text in file find . -type f -exec sed -i.bak “s/fengo/dressholic/g” {} \;  find . -type f -exec sed -i.bak “s/Fengo/Dressholic/g” {} \;  delete files in folders with extension find . -name “*.bak*” -type f -delete