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Full Discussion: How to make variables in script function local?
Top Forums Shell Programming and Scripting How to make variables in script function local? Post 302173477 by alex_5161 on Thursday 6th of March 2008 07:03:08 PM
Old 03-06-2008
How to make variables in script function local?
Is it possible to make function variables local?
I mean for example, I have a script variable 'name' and in function I have declared variable 'name'
I need to have script's 'name' have the same value as it was before calling the function with the same declaration.

The way to preserve a script var in begining of the function and restore before exiting is last one. I am looking for something more intelligent.

Why?
I have situation, when I need to consolidate many script files into one. Many function in result file use the same variables and call each other.
It was not a problem before as those functions ran in different process, now -the same.

Example:
Code:
cat > tst.sh
#! /bin/bash
func1()
{
  var1="asd-func1()"
}

func2()
{
#! /bin/bash
  var1="lkj-func2()"
}

var1=main_body
echo $var1

func1;
echo "after func1: $var1"

func2;
echo "after func2: $var1"
^C
> tst.sh
main_body
after func1: asd-func1()
after func2: lkj-func2()
>

Thanks
Last edited by alex_5161; 03-06-2008 at 08:07 PM.. Reason: add result
 

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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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