How to pass var values from .js file to the variables in the bash file

Question

I have a variables.js file that includes several variables with values like:

var var_1 = 1;
var var_2 = 'someText';

I need to pass these values to variables within the vars bash file:

VAR_1
VAR_2

That sounds like a decently simple task, however, having a lack of practical experience with bash scripts baffles me.

Tried using source or reading line by line, however, it didn't lead to a possible solution.

Are `var_1` and `var_2` the real variable names or are they placeholders for completely different names? — Cyrus, Feb 13 '22 at 21:23

score 1 · Accepted Answer · answered Feb 13 '22 at 21:26

1

With GNU grep and a Perl-compatible regular expression (-P):

VAR_1=$(grep -Po '(?<=^var var_1 = ).*?(?=;)' variables.js)
VAR_2=$(grep -Po '(?<=^var var_2 = ).*?(?=;)' variables.js)

answered Feb 13 '22 at 21:26

Cyrus

1 Answers1