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Full Discussion: Oracle return codes?
Special Forums UNIX and Linux Applications Oracle return codes? Post 302375928 by pludi on Monday 30th of November 2009 06:57:37 AM
Old 11-30-2009
Generally: yes, status != 0 is sufficient, if I can be sure that status 0 isn't the only code returned, and without any documentation I assume the worst (I've seen too many tools always returning 0, no matter what).

But, knowing the operators that will have to use that script, sooner or later I'll have to give more information than just Success/Failure, and I'd rather get that information via a return code, that by parsing the command output, which could change without warning.

Besides, I'm sure I'm sooner or later someone will have a similar task, where the scripts execution path will depend on the failure reason.
 

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service(8)						      System Manager's Manual							service(8)

NAME
service - run a System V init script SYNOPSIS
service SCRIPT COMMAND [OPTIONS] service --status-all service --help | -h | --version DESCRIPTION
service runs a System V init script in as predictable an environment as possible, removing most environment variables and with the current working directory set to /. The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT. The supported values of COMMAND depend on the invoked script. service passes COMMAND and OPTIONS to the init script unmodified. All scripts should support at least the start and stop commands. As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the start com- mand. service --status-all runs all init scripts, in alphabetical order, with the status command. EXIT CODES
service calls the init script and returns the status returned by it. FILES
/etc/init.d The directory containing System V init scripts. ENVIRONMENT
LANG, TERM The only environment variables passed to the init scripts. SEE ALSO
/etc/init.d/skeleton, update-rc.d(8), init(8), invoke-rc.d(8). Jan 2006 service(8)
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