linux 命令返回的退出状态 1 的含义
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Meaning of exit status 1 returned by linux command
提问by user2664054
What is meaning of exit status 1 returned by linux command? Like 127 exit status indicates "command not found".
linux命令返回的退出状态1是什么意思？像 127 退出状态表示“找不到命令”。
I have visited http://linux.die.net/abs-guide/exitcodes.htmlpage, does it mean exit status 1 does not have particular special meaning?
我访问过http://linux.die.net/abs-guide/exitcodes.html页面，是不是说退出状态 1 没有特别的特殊含义？
回答by tripleee
The only general convention is that a zero exit status signifies success, whereas any non-zero exit status is a failure.
唯一的通用约定是零退出状态表示成功，而任何非零退出状态都是失败。
Many -- but certainly not all -- command-line tools return exit code 1 for syntax error, i.e. you had too few arguments or an invalid option.
许多——但肯定不是全部——命令行工具返回退出代码 1 以表示语法错误，即参数太少或选项无效。
Many -- but, alas, not all -- command-line tools have a manual page. By convention, it should document the exit codes of the program, but many do not.
许多——但是，可惜，不是所有——命令行工具都有一个手册页。按照惯例，它应该记录程序的退出代码，但很多没有。
回答by Tajinder
You can see the value of the exit status using man.
您可以使用 来查看退出状态的值man。
Giving an example below:
下面举个例子：
man ls
Now search for string exit
现在搜索字符串退出
Adding screen shot below:
添加屏幕截图如下：
