Validation & Detection

Command	Description
validate-json	Validate JSON
validate-email	Validate email address
validate-url	Validate URL
detect	Auto-detect encoding and decode
extract-emails	Extract all emails from text
extract-urls	Extract all URLs from text
extract-ips	Extract all IP addresses from text

Examples

echo '{"key":"value"}' | tweak validate-json
echo "user@example.com" | tweak validate-email
echo "not-an-email" | tweak validate-email
echo "SGVsbG8=" | tweak detect
cat log.txt | tweak extract-emails
cat page.html | tweak extract-urls
cat access.log | tweak extract-ips

validate-json, validate-email, and validate-url return non-zero exit codes on invalid input.