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node子进程（Child Process）获取硬盘分区

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08/08
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node   child_process文档

child_process.exec(command[, options][, callback])

  • command <string> The command to run, with space-separated arguments.
  • options <Object>
    • cwd <string> Current working directory of the child process. Default: null.
    • env <Object> Environment key-value pairs. Default: null.
    • encoding <string> Default: 'utf8'
    • shell <string> Shell to execute the command with. See Shell Requirements and Default Windows Shell. Default: '/bin/sh' on UNIX, process.env.ComSpec on Windows.
    • timeout <number> Default: 0
    • maxBuffer <number> Largest amount of data in bytes allowed on stdout or stderr. If exceeded, the child process is terminated. See caveat at maxBuffer and Unicode. Default: 200 * 1024.
    • killSignal <string> | <integer> Default: 'SIGTERM'
    • uid <number> Sets the user identity of the process (see setuid(2)).
    • gid <number> Sets the group identity of the process (see setgid(2)).
    • windowsHide <boolean> Hide the subprocess console window that would normally be created on Windows systems. Default: false.
  • callback <Function> called with the output when process terminates.
    • error <Error>
    • stdout <string> | <Buffer>
    • stderr <string> | <Buffer>

 

init(list){//得到硬盘分区的数组
let ths = this;
let lists = ths.arrayTrim(list);
return lists;
}
arrayTrim(arr){//数组中各元素的空格去除
arr.shift();
arr.forEach(function(item, index){
arr[index] = item.trim();
});
return arr;
}
logicaldisk(){//获取自盘分区的字符串
var ths = this;
spawn.exec('wmic logicaldisk get caption', {
windowsHide: true
}, function(err, stdout, stderr) {
if(err || stderr) {
console.log("root path open failed" + err + stderr);
return;
}
let disks = stdout.trim().split('\n');
ths.init(disks);
})
}