bash 将 stdout/stderr 重定向到多个文件
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Redirecting stdout/stderr to multiple files
提问by kevin948
I was wondering how to redirect stderr to multiple outputs. I tried it with this script, but I couldn't get it to work quite right. The first file should have both stdout and stderr, and the 2nd should just have errors.
我想知道如何将 stderr 重定向到多个输出。我用这个脚本尝试过，但我无法让它正常工作。第一个文件应该有 stdout 和 stderr，第二个应该只有错误。
perl script.pl &> errorTestnormal.out &2> errorTest.out
Is there a better way to do this? Any help would be much appreciated. Thank you.
有一个更好的方法吗？任何帮助将非常感激。谢谢你。
回答by Jarek
perl script.pl 2>&1 >errorTestnormal.out | tee -a errorTestnormal.out > errorTest.out
perl script.pl 2>&1 >errorTestnormal.out | tee -a errorTestnormal.out > errorTest.out
Will do what you want.
会做你想做的。
This is a bit messy, lets go through it step by step.
这有点乱，让我们一步一步来。
- We say what used to go to
STDERRwill now goSTDOUT - We say what used to go to
STDOUTwill now go to errorTestnormal.out.
- 我们说曾经去的
STDERR现在会去STDOUT - 我们说以前去的
STDOUT现在会去 errorTestnormal.out。
So now, STDOUTgets printed to a file, and STDERRgets printed to STDOUT. We want put STDERRinto 2 different files, which we can do with tee. tee appends the text it's given to a file, and also echoes to STDOUT.
所以现在，STDOUT被打印到一个文件，然后STDERR被打印到STDOUT. 我们想放入STDERR2 个不同的文件，我们可以用 tee 来做。tee 将它给定的文本附加到文件中，并且还回显到STDOUT.
- We use
teeto append toerrorTestnormal.out, so it now contains all theSTDOUTandSTDERRoutput ofscript.pl. - Then, we write
STDOUToftee(which containsSTDERRfromscript.pl) intoerrorTest.out
- 我们使用
tee附加到errorTestnormal.out，因此它现在包含 的所有STDOUT和STDERR输出script.pl。 - 然后，我们将
STDOUToftee(包含STDERRfromscript.pl) 写入errorTest.out
After this, errorTestnormal.outhas all the STDOUToutput, and then all the STDERRoutput. errotTest.outcontains only the STDERRoutput.
在此之后，errorTestnormal.out拥有所有STDOUT输出，然后是所有STDERR输出。errotTest.out只包含STDERR输出。
回答by R.J.
I had to mess around with this for a while as well. In order to get stderr in both files, while only putting stdout into a single file (e.g. stderr into errors.log and output.log and then stdout into just output.log) AND in the order that they happen, this command is better:
我也不得不为此纠结了一段时间。为了在两个文件中都获得 stderr，同时只将 stdout 放入单个文件中（例如，stderr 放入 errors.log 和 output.log，然后 stdout 放入 output.log）并且按照它们发生的顺序，这个命令更好：
((sh test.sh 2>&1 1>&3 | tee errors.log) 3>&1 | tee output.log) > /dev/null 2>&1
The last /dev/nul 2>&1 can be omitted if you want the stdout and stderr to still be output onto the screen.
如果您希望 stdout 和 stderr 仍然输出到屏幕上，则可以省略最后一个 /dev/nul 2>&1 。
回答by kol
I guess in case of the 2nd ">" you try to send the error output of errorTestnormal.out(and not that of script.pl) to errorTest.out.
我想在第二个“>”的情况下，您尝试将errorTestnormal.out（而不是script.pl）的错误输出发送到errorTest.out.
