开球和出口状态 [英] tee and exit status

问题描述

是否有tee"的替代方案，它捕获正在执行的命令的 STDOUT/STDERR，并以与处理命令相同的退出状态退出.如下:

is there an alternative to "tee" which captures STDOUT/STDERR of the command being executed and exits with the same exit status as the processed command. Something as following:

eet -a some.log -- mycommand --foo --bar

其中eet"是tee"的虚构替代品:)(-a 表示追加，-- 分隔捕获的命令)破解这样的命令应该不难，但也许它已经存在，而我不知道吗?

Where "eet" is an imaginary alternative to "tee" :) (-a means append, -- separates the captured command) It shouldn't be hard to hack such a command but maybe it already exists and I'm not aware of it?

谢谢.

推荐答案

这是一个 eet.适用于我可以使用的所有 Bash，从 2.05b 到 4.0.

Here's an eet. Works with every Bash I can get my hands on, from 2.05b to 4.0.

#!/bin/bash
tee_args=()
while [[ $# > 0 && $1 != -- ]]; do
    tee_args=("${tee_args[@]}" "$1")
    shift
done
shift
# now ${tee_args[*]} has the arguments before --,
# and $* has the arguments after --

# redirect standard out through a pipe to tee
exec | tee "${tee_args[@]}"

# do the *real* exec of the desired program
exec "$@"

(pipefail 和 $PIPESTATUS 很不错，但我记得它们是在 3.1 或大约版本中引入的.)

(pipefail and $PIPESTATUS are nice, but I recall them being introduced in 3.1 or thereabouts.)

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