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Show the redirect chain of a URL with status codes

harmlessApachealle
Adjust the values, the command updates live
user@server
curl -sIL "http://example.com/" | grep -iE "^(HTTP/|location:)"

Sends HEAD requests, follows every redirect with -L and filters out the status lines and Location headers. This shows at a glance whether a redirect is permanent (301, 308) or temporary (302, 307) and how many hops it takes to reach the target. For search engines, the canonical address should be reachable with exactly one 301 redirect, chains like http to https to www waste crawl budget and load time.

Note: Some applications respond differently to HEAD than to GET. If in doubt, replace -I with -o /dev/null -D -.

Also searched as

  • check 301 or 302 redirect
  • show redirect chain command line
  • test http to https redirect
  • check www redirect curl

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All in Apache

Check HTTP status codes for a list of URLs

$while read -r u; do printf '%s %s\n' "$(curl -o /dev/null -sS -w '%{http_code}' "$u")" "$u"; done < urls.txt
harmlessNetwork

Follow and show the redirect chain of a URL

$curl -sSIL http://example.com/ | grep -iE '^(HTTP/|location:)'
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Show the number of redirects and the final URL

$curl -sL -o /dev/null -w 'Weiterleitungen: %{num_redirects}\nZiel: %{url_effective}\nStatus: %{http_code}\n' https://example.com/
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Test http, https, www and non-www at once

$for u in http://example.com/ http://www.example.com/ https://example.com/ https://www.example.com/; do curl -s -o /dev/null -m 10 -w "%{http_code} $u -> %{redirect_url}\n" "$u"; done
harmlessSEO checks

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
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Check maintenance mode for status 503 and Retry-After

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