使用create-react-app時的something is already running on port 3000
問題： 自己今天在使用create-react-app搭建react應用的時候，開啟了兩個React app，然后npm start的時候，出現something is already running on port 3000 解決方法 自己之前也遇到過這個問題，但是沒有記錄下來，我自己試着 ...
原文：Something is already running on port 3000. Would you like to run the app on another port instead?
查看端口sudo lsof i : 刪除進程 sudo kill pid ...
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