Find a random file within an Android project (excluding generated files)

random_file.sh

echo "Finding random file..."

# get all files in root dir
files=$(find . -type f)

# iterate over file list and filter out some things
saved_index=0
all_file_count=0
while read -r line; do
	all_file_count=$(($all_file_count+1));

	# filter out files in .idea dir
	if [[ $line == *"/.idea"* ]]; then
  		continue
	fi

	# filter out files in .git dir
	if [[ $line == *"/.git"* ]]; then
  		continue
	fi
	
	# filter out files in .build dirs
	if [[ $line == *"/build"* ]]; then
  		continue
	fi
	
	saved_files[$saved_index]="$line";
	saved_index=$(($saved_index+1));
done <<< "$files"
# echo "${all_file_count} files scanned"
# echo "${saved_index} files added to list"

# generate random number from range
random_number=$(($RANDOM%$saved_index))
# echo "random file index: ${random_number}"

echo "Your random file is:"
echo ${saved_files[$random_number]}