Validate Curse download URLs using commonly available tools and cursemeta.
wget https://cursemeta.dries007.net/raw_mods.json
json_reformat < raw_mods.json > raw_mods_formatted.json
cat raw_mods_formatted.json | grep DownloadURL | sed -e 's/^ "DownloadURL": "//' -e 's/",$//' > urls.list
./validate_urls.sh < urls.list | grep -v OK