Err: 'ping' is not recognized as an internal
windows 下的ping命令突然不能用了： 原因：此前在安裝JDK時，將%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin以新添加的 「path」變量的方法加入系統變量，導致原來的系統變量被覆蓋（應該在原有path中添加JAVA 的執行路徑） 解決方法：重新將%SystemRoot%\system32\加入path變量（如果只有一個路徑，不要忘了最後加分號） 保存後，重新打
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相關文章
- 1. 'pip' is not recognized as an internal or external command
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