Scala: Read variables defined in shell script

Question

From within my Scala application, I want to execute a script (e.g. setenv.sh) which sets some variables. I then want to read back these variables in my application to do some further processing. Here is my sample setenv.sh file

#!/bin/bash

TEST=0000

I have the following but it doesn't work. I tried many alternatives but failed to do it.

Seq("bash", "-c", "source setenv.sh && env").!!

The above command still gives me the old environment variables and i cannot see TEST.

My goal is to just load all the variables in setenv.sh file and use them in my application.

I appreciate the quick comeback!

GhostCat
– GhostCat

2018-08-05 05:11:36 +00:00
Commented Aug 5, 2018 at 5:11 — GhostCat
– GhostCat, Commented Aug 5, 2018 at 5:11

GhostCat · Accepted Answer · 2017-11-26 16:00:32Z

1

Can't work that easy. Keep in mind that you are opening a new shell process. That process sees the setting - to then end.

If at all try explicitly exporting that value.

Alternatively you could print the values to stdout and have Scala parse that output.

answered Nov 26, 2017 at 16:00

GhostCat

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2 Comments

Behroz Sikander Over a year ago

I am currently looking for a solution without any modifications to setenv.sh script. Is it possible to execute the setenv.sh and then somehow get the environment variables of the new process in the parent process?

GhostCat Over a year ago

Again: currently your script isn't doing something that has any effect on the parent process. Unless you change the script, you are broken.

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