庆典：管道输出和捕获退出状态 [英] bash: pipe output AND capture exit status

问题描述

我想执行的bash shell中长时间运行的命令，都捕获它的退出状态和三通的输出。

I want to execute a long running command in bash shell, and both capture its exit status, and tee its output.

所以我这样做

command | tee out.txt
ST=$?

问题是变量ST抓住三通的退出状态，而不是命令。我怎样才能解决这个问题？

The problem is that the variable ST captures the exit status of tee and not of command. How can I solve this?

请注意这个命令是长时间运行和输出重定向到一个文件，查看它以后是不是对我来说是很好的解决方案。

Note that command is long running and redirecting the output to a file to view it later is not a good solution for me.

推荐答案

有一个名为内部猛砸变量 $ PIPESTATUS ;它是持有命令你最后的前台管道的每个命令的退出状态的数组。

There is an internal Bash variable called $PIPESTATUS; it’s an array that holds the exit status of each command in your last foreground pipeline of commands.

<command> | tee out.txt ; test ${PIPESTATUS[0]} -eq 0

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