Go over all files in a GCS bucket and find files, that are not valid JSON.

find-invalid-json-files-in-gcs.sh

for file in $(gsutil -m ls -r gs://**/*.json); do
    echo "Validating $file"
    gsutil cat "$file" | jq > /dev/null
    if [ $? -ne 0 ]; then
        echo "Invalid: $file" > invalid_files.txt
    fi
done