topic UX - Return Codes in Operating System - HP-UX

UX - Return Codes

Thomas A. Feichtegger — Thu, 07 Sep 2000 10:53:26 GMT

Hi all,

maybe a simlpe question, but it would help very much:
On UX systems, comands return a zero when they terminate normaly and a nonzero value when they don't. I a shell script the "exit" command may be used to retun an explicit value. Now my question: Are there any UX - "predefined" exit codes, which the system uses for, let's say, irregular termination?
And what are the values therefor?

Hope you can help me in that matter, and thx a lot.

Thomas

Re: UX - Return Codes

Andy Monks — Thu, 07 Sep 2000 10:55:27 GMT

Each command may return different codes, as it is programmer dependant. Therefore you'll have to check the man pages for the commands your interested in to see what they return when.

Re: UX - Return Codes

Devbinder Singh Marway — Thu, 07 Sep 2000 11:02:34 GMT

May be of use --- IF however you want to , block users entering certain commands you can also look at ( kill -l ) signals e.g. in your script block users shelling out by pressing ctrl +c
etc..

Re: UX - Return Codes

John Palmer — Thu, 07 Sep 2000 11:39:32 GMT

Thomas,

The file /usr/include/sys/errno.h defines standard C library error codes. The comments define what the error number is used for and may be of assistance to you.

Regards,
John

Re: UX - Return Codes

Andy Monks — Thu, 07 Sep 2000 12:25:16 GMT

John, the /usr/include/sys/errno.h file is the return codes for system calls and not hp-ux commands. Although some commands will exit and report the system error (like dd), most do not.

Re: UX - Return Codes

James R. Ferguson — Thu, 07 Sep 2000 12:51:18 GMT

Hi:

Some utilities follow at least use:

0=OK, 1=fault 2=warning

...but don't count on that!

...JRF...