我知道我可以使用$?查看最后执行的命令的退出代码,但如果我想确定我是抛出了自己的“退出0”还是“退出1”,该怎么办?
例如:
#!/bin/bash -e
trap "{ echo Exit code $?; exit; }" EXIT
exit 1
如果我运行这个脚本,它会打印出“退出代码0”,然后以退出代码1退出。我可以访问陷阱中的代码吗?还是我只是走错了路?换句话说,我希望这个简单的脚本打印出“退出代码1”。
我知道我可以使用$?查看最后执行的命令的退出代码,但如果我想确定我是抛出了自己的“退出0”还是“退出1”,该怎么办?
例如:
#!/bin/bash -e
trap "{ echo Exit code $?; exit; }" EXIT
exit 1
如果我运行这个脚本,它会打印出“退出代码0”,然后以退出代码1退出。我可以访问陷阱中的代码吗?还是我只是走错了路?换句话说,我希望这个简单的脚本打印出“退出代码1”。
它是0,因为<code>$脚本开头的代码>(由于双引号而被替换)为0。
请尝试以下操作:
trap { echo Exit code $?; exit; } EXIT
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