问题
What is meaning of exit status 1 returned by linux command? Like 127 exit status indicates "command not found".
I have visited http://linux.die.net/abs-guide/exitcodes.html page, does it mean exit status 1 does not have particular special meaning?
回答1:
The only general convention is that a zero exit status signifies success, whereas any non-zero exit status is a failure.
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.
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.
回答2:
You can see the value of the exit status using man.
Giving an example below:
man ls
Now search for string exit
Adding screen shot below:
来源：https://stackoverflow.com/questions/20965762/meaning-of-exit-status-1-returned-by-linux-command