github推送項目常見錯誤fatal: remote origin already exists.

若是輸入 git remote add origin  https://github.com/(user_name)/(app_name).git     提示出錯信息：fatal: remote origin already exists.     解決辦法以下：     一、先輸入 git remote rm origin     二、再輸入 git remote add origin  ht

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