Question

我正在编写git hook并且对下一个代码行为非常困惑：

#!/bin/sh

exit_code=0

git diff --cached --name-only --diff-filter=ACM | while read line; do
    echo "Do something with file: $line"
    # some stuff with exit code is equals to 0 or 1
    stuff_exit_code=$?
    exit_code=$(($exit_code + $stuff_exit_code))
done

echo $exit_code
exit $exit_code

我希望 echo $ exit_code 会产生每个我的东西退出代码非零的文件总量。但我总是看到0.我的错误在哪里？

Answer 1

这是因为管道在不同的进程中执行。只需将其替换为 for-in 循环。

#!/bin/sh

exit_code=0

for file in `git diff --cached --name-only --diff-filter=ACM`
do
    echo "Do something with file: $file"
    # some stuff with exit code is equals to 0 or 1
    stuff_exit_code=$?
    exit_code=$(($exit_code + $stuff_exit_code))
done

echo $exit_code
exit $exit_code

在外循环中使用sh while-read-line-loop迭代计数器

1 个答案: