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搜索关键字：

linux how to get all pipe return value

参考链接：

• http://unix.stackexchange.com/questions/14270/get-exit-status-of-process-thats-piped-to-another
• http://stackoverflow.com/questions/6871859/piping-command-output-to-tee-but-also-save-exit-code-of-command
• http://tldp.org/LDP/abs/html/internalvariables.html#PIPESTATUSREF

参考解答：

$PIPESTATUS 数组（在Zsh中是小写）

# Bash
$ false | true
$ echo "${PIPESTATUS[0]} ${PIPESTATUS[1]}"
1 0

# Zsh
$ false | true
$ echo "${pipestatus[1]} ${pipestatus[2]}"
1 0

# Zsh
$ echo $0
-zsh
$ echo $ZSH_VERSION
5.0.5
$ ls | bogus_command | wc
zsh: command not found: bogus_command
       0       0       0
$ echo ${pipestatus[@]}
0 127 0

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