#! /bin/bash main_folder="./" prefix="p3d_" for folder in $(ls -d -- ${main_folder}*/) do for file in $(ls $folder) do filename=$folder$file filename_fixed=${filename//\/\//\/} # check if filename contains if [[ "$file" == ${prefix}* ]]; then echo "Update Integrator into ${filename_fixed}" python change_integrator_pbrt.py --prefix ${prefix} --pbrt ${filename_fixed} fi done done