help with shell program

adgarg · #1 (**permalink**) 10-30-2007

I want to print the value of variables a1, a2, a3 in for loop in the following program:

a1=this
a2=is
a3=printed

for((i=1;i<4;i++))
do
var=a$i
#w=`echo $var`
e=${var}
echo $e
done

But actually I get a1,a2,a3 as the output not the "this is printed"

So the main question is if I have a variable name(say p1) in another variable(in Q) how will I print the value of p1 from Q?

Thanks,

porter · #2 (**permalink**) 10-30-2007

Quote:

Originally Posted by adgarg

var=a$i

You'll need to play around with eval or similar to expand what you are trying to do, I'm guessing here, but something like "eval \$a$i"

aigles · #3 (**permalink**) 10-30-2007

Code:

eval var=\$a$i

adgarg · #4 (**permalink**) 10-31-2007

Thanks for your help !

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