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Full Discussion: How to handle errors and warnings
Top Forums Shell Programming and Scripting How to handle errors and warnings Post 302463919 by stunnerz_84 on Monday 18th of October 2010 08:31:44 PM
Old 10-18-2010
How to handle errors and warnings
Hi Guys,
I am working on a shell script(main script) where in i have to call another script B and pass parameter to that script. I see that the shell script that is being called in the main script is throwing warnings/fatal errors. So i am just wondering how do i capture these and ask the script to exit when there are any warnings/fatal errors.
FYI...i am calling this script B three times in the main script...once for retrieving (parameter 1)the data, then for update(paramter 2) and then for storing(paramter 3) the data. If there are warnings/errors in any of these steps, they should be captured and the script should exit instead of going further.

Thanks in advance!!
 

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LEARN ABOUT LINUX

service

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 environment as possible, removing most environment variables and with 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 it 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
       command.

       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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