How can you get a variable's value given its name in korn shell?

Question

Is there a way in ksh to get a variable's value when you have been given the name of the variable?

For example:

#!/usr/bin/ksh
var_name=$1  #pretend here that the user passed the string "PATH"
echo ${$var_name}  #echo value of $PATH -- what do I do here?

Answer 1

eval `echo '$'$var_name`

echo concatenates a '$' to the variable name inside $var_name, eval evaluates it to show the value.

EDIT: The above isn't quite right. The correct answer is with no backticks.

eval echo '$'$var_name

Answer 2

var_name=$1 #pretend here that the user passed the string "PATH"

printenv $var_name