Running shell script inside nodejs using shelljs

Question

I am trying to run a shell script inside node.js using shelljs module as follows.

exec('mycommand arg1')

where arg1 is supposed to be an Integer. When I replace arg1 with a number (let's say 8) it works perfectly but when I replace arg1 with a variable containing the corresponding value (in that case 8) i get an error with invalid argument.

I tried to do some encoding but it doesn't seem to work. I don t know why. please help

Please, take a look at how to format your posts properly.

user2845360
– user2845360

2016-03-23 14:04:59 +00:00
Commented Mar 23, 2016 at 14:04 — user2845360
– user2845360, Commented Mar 23, 2016 at 14:04

PostCrafter · Accepted Answer · 2016-03-23 13:28:12Z

1

I guess you just replaced the arg1 with your variable name, you'll have to concatenate your variable.

var myArg = 8;
exec('mycommand ' + myArg);

If you're using ES6, you can also make use of template literals

var myArg = 8;
exec(`mycommand ${myArg}`);

answered Mar 23, 2016 at 13:28

PostCrafter

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