abc - 使用 node.js 执行终端命令

Question

我正在尝试使用 node.js spawn 执行终端命令

因为我正在使用代码

console.log(args)

var child = spawn("hark", args, {cwd: workDir});
        child.stdout.on('data', function(data) {

          console.log(data.toString())        
        });

        child.stderr.on('data', function(data) {
          console.log('stdout: ' + data);

        });

        child.on('close', function(code) {
          console.log('closing code: ' + code);

        });

But it treated greater than> as string">" 并获得输出为

tshark: Invalid capture filter "> g.xml" 

    That string isn't a valid capture filter (syntax error).
    See the User's Guide for a description of the capture filter syntax.

>没有字符串如何使用

Answer 1

您可以使用文件流将所有输出从 spawnedhark放到g.xml.
例子：

// don't need ">" in args
var args = [' 02:00:00:00' ,'-s','pdml'],
    logStream = fs.createWriteStream('./xml');

var spawn = require('child_process').spawn,
    child = spawn('tshark', args);

child.stdout.pipe(logStream);
child.stderr.pipe(logStream);

child.on('close', function (code) {
    console.log('child process exited with code ' + code);
});

因为child这里是一个流，所以您可以将它通过管道传输到您记录的文件流中。