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Full Discussion: Generate array name at run time Korn shell
Top Forums Shell Programming and Scripting Generate array name at run time Korn shell Post 302418332 by harris2107 on Tuesday 4th of May 2010 01:54:13 AM
Old 05-04-2010
Generate array name at run time Korn shell
Hi,

I am trying to define number of array based on constant derived during execution phase of a script. Here is what i am trying..

Code:
#First Part, Get LUN input from User
lun_count=4
count=0
set -A my_lun
while :
do
while [[ $lun_count -ne 0 ]]; do
        read L?"Enter Lun "$count" Number:"
        my_lun[count]=${L}
        lun_count=$(( $lun_count-1 ))
        count=$(( $count+1 ))
done

#Second Part, Get Slices input from user for each LUN.
lun_count=4
if [ "$lun_count" -gt 1 ];
then
count=0
while [[ $count -lt ${#my_lun[*]} ]]; do
set -A my_slice_${my_lun[$count]}
echo "Enter Slices number in  LUN: ${my_lun[$count]}:"
export count1=0
while :
do
        read g1?"Enter Slice Number:"
        [ -z "${g1}" ] && break
        my_slice_${my_lun[$count]}[$count1]=${g1}
        count1=$(( $count1+1))
done
count=$(( $count+1 ))
fi

My question is in the second part, where i am dynamically generating the Array name & then assigning element values to it depending on the counter.

For example:

For the first loop, i give two LUN numbers, say 10 & 11. So, my first array would be

my_lun[0]=10
my_lun[1]=11

For the second loop, since in generating the array name based on the LUN name & i give 3 values as elements for each array. So, my array should look like ( this is my question),

my_slice_10[0]=3
my_slice_10[1]=4
my_slice_10[2]=6

my_slice_11[0]=1
my_slice_11[1]=7
my_slice_11[2]=5

But i am getting the following error when i try to execute this..

my_slice_10[0]=3: not found

If i do not generate the array name at run time & define it at the beginning, then it is working fine. Any idea, what i am doing wrong here.

Any info would be of great help.

Thanks,
Harris.
 

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LEARN ABOUT SUSE

platform::shell

platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME

       platform::shell - System identification support code and utilities

SYNOPSIS

       package require platform::shell ?1.1.4?

       platform::shell::generic shell
       platform::shell::identify shell
       platform::shell::platform shell
_________________________________________________________________

DESCRIPTION

       The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell.

       This  package  allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only
       requirement is that the other shell (identified by its path), is actually executable on the current machine.

       While for most platform this means that the architecture of the interrogated shell is identical to the architecture of  the  running  shell
       this  is  not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run
       32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers.

       For applications like a code repository it is important to identify the architecture of the shell which will  actually  run  the  installed
       packages, versus the architecture of the shell running the repository software.

COMMANDS

       platform::shell::identify shell
	      This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::generic shell
	      This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::platform shell
	      This command returns the contents of tcl_platform(platform) for the specified Tcl shell.

KEYWORDS

       operating system, cpu architecture, platform, architecture

platform::shell 						       1.1.4							platform::shell(n)
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