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Full Discussion: case question
Top Forums Shell Programming and Scripting case question Post 302209188 by ynir on Thursday 26th of June 2008 06:29:25 AM
Old 06-26-2008
Quote:
Originally Posted by naamas03
hi all
i have script call tmp1
run_object1
run_object2
case $? in
0) ;;
*) echo "error try again"
read an ;;
esac

can some one please explain to me from the case till the end of the script ?
thanks
$? is the status returned from previous command.
In case of '0' (success) it does nothing.
In any other case, it echoes "error try again" and waits for user input to be read into the 'an' parameter.
 

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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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