[英](Node.js) How to store stdout.pipe into a variable?
I want to get free -m (linux shell command) and store its result into a variable by using source code below: 我想获得免费的-m(Linux shell命令),并通过使用以下源代码将其结果存储到变量中:
var spawn = require('child_process').spawn,
command = spawn('free', ['-m']);
command.stdout.pipe(process.stdout);
Is there any way to store process.stdout in a variable, please me some suggestions 有什么方法可以将process.stdout存储在变量中,请给我一些建议
This is fairly simple with child_process.exec
: 这对于
child_process.exec
非常简单:
var child = require("child_process");
var freeOut;
child.exec("free", ["-m"], function (error, stdout, stderr) {
if (error) {
console.error(error, stderr);
return;
}
//stdout and stderr are available here
freeOut = stdout;
process.stdout.write(stdout);
});
//Note. Do NOT use freeOut here. exec is async. Can only use in the callback
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