topic Variable of variable in Operating System - HP-UX

Variable of variable

Sylvain CROUET — Tue, 13 Apr 2004 05:44:07 GMT

Hi!

I want to use a for loop within a shell script to display the value of several variables, but I can't manage it. It shoul be something like that:

for VAR in VAR1 VAR2 VAR3 ; do
echo
done

Re: Variable of variable

Sanjay Kumar Suri — Tue, 13 Apr 2004 05:50:35 GMT

Is this what you need?

a=5
b=5
for var in a b
do
echo $var
done

sks

Re: Variable of variable

Denver Osborn — Tue, 13 Apr 2004 06:02:45 GMT

Are the variables numeric and are you trying to get thier total? or create a loop that takes VAR and add it's value to VAR1 then VAR2 then VAR3??

Post additional info pls. Can you give us an example of what VAR, VAR1, VAR2 and VAR3 could be and your anticipated result.

-denver

Re: Variable of variable

Sylvain CROUET — Tue, 13 Apr 2004 06:03:49 GMT

No. I do not need the script to display the names of the variables (a and b), but their values (5 and 5).

Re: Variable of variable

KapilRaj — Tue, 13 Apr 2004 06:04:46 GMT

As I read ,

you have the following setup in place

export KAPS=KAPILRAJ
export KK=KAPS

using KK , you want to get KAPILRAJ i.e. something like echo ${$KK} .. ?

you may try the following

echo $KK|awk '{print "echo","$"$0}' |ksh

Please make sure that all the variables are exported i.e. export VAR1 VAR2

Regds,

Kaps

Re: Variable of variable

Sylvain CROUET — Tue, 13 Apr 2004 06:06:41 GMT

I just want to display the values of my variables, which are "strings".

Re: Variable of variable

KapilRaj — Tue, 13 Apr 2004 06:12:46 GMT

Can u explain in detail please .......

An echo $VAR will show the value only !!

Regds,

Kaps

Re: Variable of variable

Sanjay Kumar Suri — Tue, 13 Apr 2004 06:17:13 GMT

Check the following:

a=abc
b=def
for var in $a $b
do
echo $var
done

sks

Re: Variable of variable

Denver Osborn — Tue, 13 Apr 2004 06:18:09 GMT

VAR1=is
VAR2=this
VAR3=it

for VAR in $VAR1 $VAR2 $VAR3; do
echo $VAR
done

or??

VAR1=is
VAR2=this
VAR3=it

VAR="$VAR1 $VAR2 $VAR3"
echo $VAR

Re: Variable of variable

Jeroen Peereboom — Tue, 13 Apr 2004 06:21:21 GMT

What about the following:

A="this is 1"
B="This is 2"

for i in "$A" "$B"
do
echo $i
done

JP

Re: Variable of variable

Jeroen Peereboom — Tue, 13 Apr 2004 06:26:54 GMT

Many replies at the same time.
Note that quotes are essential if your variable values contain multiple words.

JP

Re: Variable of variable

Sylvain CROUET — Tue, 13 Apr 2004 07:45:57 GMT

The solution using $VAR1, $VAR2... directly within the "in" statement is quite interesting, but what if I want to print:
=

Re: Variable of variable

curt larson_1 — Tue, 13 Apr 2004 09:56:03 GMT

for var in var1 var2
do
eval print "$var = \$$var"
done

Re: Variable of variable

Sylvain CROUET — Tue, 13 Apr 2004 10:11:56 GMT

Thanks Curt! That was the solution I was looking for.