Combining STDOUT and STDERR in this way prevents STDERR output from showing up on the system console and enables the program to parse it.

以这种方法合并STDOUT和STDERR，将阻止STDERR输出在系统控制台上显示并允许程序解析它。

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Meanwhile, the selpg process runs in the background, with stdout and stderr both redirected to files.

同时，selpg 进程在后台运行，并且标准输出和标准错误都被重定向至文件。

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Listing 10 shows what happens if you use nohup as we did before, but redirect both stdout and stderr.

清单10显示了按照旧方式使用nohup会发生什么情况，但同时重定向了stdout和stderr。

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