Question

Here’s an example script that doesn’t work the way I expect:

#!/bin/bash
for dynamic in a b c; do
  myvar=$dynamic

  export $myvar="hi"

  echo $(eval "$myvar")
  echo $dynamic
done

I want the output would be:

hi

a

hi

b

hi

c

Any ideas? I’m willing to stray away from this method, but I definitely want to be able to create a variable named from the output of an algorithm. In this case it’s just a for loop.

Answer 1

It’s not entirely clear that this is what you’re looking for, but I think you want something like:

#!/bin/sh

a=A
b=B
c=C
for i in a b c; do
        eval $i=value_$i
        eval echo \$$i
done
echo $a  # Prints "value_a"