How to get an Indirect Variable Value..?

Linux and Unix-Like Linux
1

Hi,

I've got a small problem.

If varible A stores "B" and Variable B stores C,
How to get the value of variable B by using only Variable A..?

I tried the following but didnt work pease help..

 
$ var1=vikram
$ echo $var1
vikram
$ vikram=sampath
$ echo $vikram
sampath
$ echo $`echo $var1`
$vikram

In the above code
Why i'm getting "$vikram" when i was expecting "sampath" (because $vikram=sampath)

Please help me the right way to decode in the above situation..

thanks

Vikram shetty

2

See the following code.

 var1=vikram
 echo $var1
vikram=sampath
 echo $vikram
 eval echo \$$var1

[or]

 eval echo \$$(echo $var1)

[or]

   eval echo \$`echo $var1`
3 
eval result=\$$var1
echo $result

It will print the word sampath

4

thanks u very much ungalnanbu and selvan..

Its working fine..

Could you please pass on me any material that describes the above behaviour of variables..

thanks

Vikram shetty

5

Indirect References.
http://www.linuxjournal.com/article/7385
Please go through the above URL.
This will help you to know about variables.

6

Refer the following links.

Advanced Bash-Scripting Guide
Very Simple Bash Scripts
Linux Shell Scripting Tutorial - A Beginner's handbook

7

Thank you very much guys..

warm regards
Vikram Shetty