Export variables to subshells

Shell Programming and Scripting
1

So i have a script that is like this:

#!/bin/sh

VARA="elementary 1
elementary 2
nursery A
nursery B
highschool AZ"

echo "${ContentOfADifferentSCRIPT}" | sh

i do not have control over the script that is inside the variable "${ContentOfADifferentSCRIPT}".

however, i know that the script content of the variable ${ContentOfADifferentSCRIPT}" needs the content of the variable "${VARA}".

how do i make the ${VARA} variable available to the "${ContentOfADifferentSCRIPT}" variable when I pipe and run sh on it?

2

You've got two options here:

  • export VARA to make the variable part of the environment
  • echo "${ContentOfADifferentSCRIPT}" | VARA="$VARA" sh to define the variable locally
1 Like
3

Third might be

 $ content='echo $aa'
 $ aa=hep                 
 $ eval $content
hep
 $

Juha

But an exit within content probably breaks things

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4

You have an sh that runs another sh?
Then perhaps you can run the code in variable in the current sh?

eval ${ContentOfADifferentSCRIPT}

(Just seeing the previous post - with the same idea.)

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