报错内容：
tar (child): jdk-8u141-linux-x64.tar.gz: Cannot open: No such file or directory
tar (child): Error is not recoverable: exiting now tar: Child returned status 2
tar: Error is not recoverable: exiting now
解决办法：
用绝对路径访问
报错内容：
tar (child): jdk-8u141-linux-x64.tar.gz: Cannot open: No such file or directory
tar (child): Error is not recoverable: exiting now tar: Child returned status 2
tar: Error is not recoverable: exiting now
解决办法：
用绝对路径访问