现在从命令行执行一个简单的脚本来测试安装是否成功。
Now execute a simple script from the command line to test the set up.
必须获取这些信息，以检查命令是否成功执行。
This information could be retrieved to check whether the command has been successfully executed.
在成功之前你可能有将这一命令执行好几次。
You may also need to execute the command a couple of times before it succeeds.
在成功之前你可能有将这一命令执行好几次。
You may also need to execute the command a couple of times before it succeeds.
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