检查在bash脚本C程序的返回值？ [英] Checking the return value of a C program in a bash script?

问题描述

我有一个bash脚本中，我使用$检查最后一次运行一个命令的退出code？可变的，但现在我执行一个C程序（从脚本），如果该计划得到成功执行返回0。有什么办法，我可以从我的bash脚本赶上的C程序这个返回值？

I have a bash script in which i check the exit code of a last run command by using $? variable but now I am executing a C program (from that script) which returns 0 if the program gets executed successfully. Is there any way I can catch this return value of the C program from with in my bash script?

相信喜欢AWK不同的命令，SED等都是用C写的他们怎么使用$？存储他们的退出codeS里呢？我怎样才能让我的C程序存储在$ ??其退出code

I believe different commands like awk, sed etc are written in C. How do they use $? to store their exit codes in it? How can I make my C program to store its exit code in $??

我希望我的问题是清楚的。

I hope my question is clear.

推荐答案

有没有必要做任何事情 - 如果你的C程序返回0，这就是将存储在 $ 的执行它的外壳变量。

There's no need to do anything - if your C program returns 0, that's what will be stored in the $? variable of the shell that executed it.

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