bash “|&”在bash中是什么意思？
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What does "|&" mean in bash?
提问by Nan Hua
For example
例如
echo "aaa" |& cat
What does |&mean here?
|&这里是什么意思？
Is there a website recommended to look up those? Since most search engines can't support searching special characters.
有没有推荐的网站来查找这些？由于大多数搜索引擎不支持搜索特殊字符。
回答by Oleg Andriyanov
From man 1 bash, section Pipelines:
从man 1 bash，部分管道：
If |& is used, command's standard error, in addition to its standard output, is connected to command2's standard input through the pipe
如果使用|&，command 的标准错误，除了它的标准输出，还通过管道连接到command2 的标准输入
So it is just like pipe operator |, but piping both stdout and stderr.
所以它就像管道操作符一样|，但同时管道化标准输出和标准错误。
回答by lunaryorn
This operator pipes both standard output and standard error from the left hand side to the right hand side.
该运算符将标准输出和标准错误从左侧输送到右侧。
The Bash reference manualhas a comprehensive index of all operators where you can lookup these operators.
该猛砸参考手册具有所有的运营商在这里你可以查找这些运营商的一个综合指标。
