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Ruby で HTTP リダイレクト先の URL を取得する

Last updated at Posted at 2020-08-07

概要

  • Ruby で HTTP リダイレクト先の URL を取得する
  • 動作確認環境: Ruby 2.7.1 + macOS Catalina

ソースコード

get_redirect.rb というファイル名で以下の内容を保存する。

get_redirect.rb
require 'net/http'

# コマンドライン引数を取得
src_url = ARGV[0]

# リダイレクト先URLを取得
redirect_url = Net::HTTP.get_response(URI.parse(src_url))['location']

# リダイレクト先URLを出力
puts redirect_url if redirect_url

実行例。

$ ruby get_redirect.rb https://bit.ly/3kmTOkc
https://t.co/yITSBp4ino
$ ruby get_redirect.rb https://t.co/yITSBp4ino
https://qiita.com/niwasawa
$ ruby get_redirect.rb https://qiita.com/niwasawa

参考資料

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