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Full Discussion: set variable in while loop?
Top Forums Shell Programming and Scripting set variable in while loop? Post 302266710 by tiger2000 on Wednesday 10th of December 2008 10:01:35 PM
Old 12-10-2008
set variable in while loop?

Dear All,

Can anyone advise why this script isn't run as expected?

===========================
status=0
cat /etc/passwd |
while read line; do
status=1
done

echo $status
===========================

it always return 0 , but not 1. why?
anything wrong?

Thanks.
 

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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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