#status-code

4 one-liners with this tag.

Check for soft 404s: does a missing page really return 404

$curl -s -o /dev/null -w '%{http_code} %{redirect_url}\n' https://example.com/diese-seite-gibt-es-nicht-$RANDOM

harmlessSEO checks

Check maintenance mode for status 503 and Retry-After

$curl -s -o /dev/null -D - https://example.com/ | grep -iE '^(HTTP/|retry-after:)'

harmlessSEO checks

Check the status code of all sitemap.xml URLs in parallel

$curl -s https://example.com/sitemap.xml | grep -oP '(?<=<loc>)[^<]+' | xargs -P 8 -I{} curl -o /dev/null -s -w '%{http_code} %{url_effective}\n' {} | grep -v '^200 ' | sort

harmlessSEO checks

Count HTTP status codes in the access log

#awk '{print $9}' /var/www/vhosts/system/example.com/logs/access_ssl_log | sort | uniq -c | sort -rn