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[Java] Linux 下没有 sudo 以及外网权限如何快速切换 Java 脚本

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现网环境：UOS20 专业版，ARM 架构。关闭了 sudo 权限，也就无法使用 root 账号，机器也没有外网，jdk 的我已经做成了 deb 的包，原本在 UOS 下是可以通过 update-alternatives 命令来切换的，但是没有 sudo 权限所以没法用这个命令，求助各位大佬有没有其他办法方便的切换 jdk 版本。

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