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请问 2>&1 放在命令行尾部和中间有什么区别吗?

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第一个标准错误输出输出到终端,标准输出输出到output.txt中;
第二个标准输出和标准错误输出都会输出到output.txt中。

解析:bash执行是有循序的,执行第一条命令时,标准错误输出输出到标准输出,而这时标准输出输出到终端,然后标准输出才输出到output.txt。


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