Bash脚本不会循环退出 [英] Bash script does not exit in loop

问题描述

我已经在HP/UX的以下脚本中运行并获得了输出:

I have run at below script in HP/UX and get that output:

Exiting #1
Exiting #2

但是我希望输出:

Exiting #1

脚本文件:

data="aaa; bbb; ccc"

echo $data | while IFS=';' read -ra array; do
    echo "Exiting #1"
    exit -1
done


echo "Exiting #2"

exit 0

我该如何解决这个问题?谢谢.

How can I solve this problem? Thanks.

推荐答案

由于管道的原因，循环中的命令在子shell中运行.当您调用exit时，仅终止子Shell，而不终止父进程.

Because of the pipe, the command in the loop run in a subshell. When you call exit, only the subshell is terminated, and not the parent process.

您可以通过使用 shopt -s lastpipe ，使用进程替换来解决此问题

You can overcome this by using shopt -s lastpipe, by using process substitution

while IFS=';' read -ra array; do
    echo "Exiting #1"
    exit -1
done < <(echo "$data")

或使用此处字符串

while IFS=';' read -ra array; do
    echo "Exiting #1"
    exit -1
done <<< "$data"

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