How can I use child_process to run a bash script that returns a list of values?

Question

How can I call the execFile method from child_process to run a bash script that returns a list of values?

My bash file (test.sh) returns a list of 8 values but the below script is printing only the last item of the list.

const { execFile } = require('child_process');
const child = execFile('./test.sh', (error,stdout,stderror) => {
  if (error) {
    throw error;
  }
  console.log(stdout);
});

Return from bash as Json or custom format? – Mike Q Sep 24 '18 at 15:35 — Mike Q, Sep 24 '18 at 15:35

score 0 · Answer 1 · answered Sep 24 '18 at 15:39

I have tested your code and it's working:

test.sh input:

echo "123"
echo "345"
echo "898"

Output is:

#node test.js 
123
345
898

So your code is working as expected. Perhaps your bash file make some errors or your output has some strange characters for example.

How can I use child_process to run a bash script that returns a list of values?

1 Answers1