How to implement a return code?


Thanks in advance.

I am creating a shell script that collets data from the system and prints the output , yet I don’t know how to implement a return code that indicates wheather it is in a critical state or not.

It is easy to implement a return code in a passive state, because it is done by just writing the return code into a file to be sent to Nagios.

Please let me know How to inform Nagios of its state.

Sorry for my terrible English


Maybe your answer is in the files in libexec.