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/
Demo
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Day3
/
Scaling
/
3-child_exec.js
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JavaScript
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var
exec=
require
(
'child_process'
).
exec
;
var
child=
exec
(
'node -v'
,
function
(
err,stdout,stderr
){
if
(err) {
console
.
log
(
'Error:'
+stderr); }
else
{
console
.
log
(
'Output is '
+stdout); } });
console
.
log
(
"PID is "
+child.
pid
);