nfs.js

var _    = require('lodash');
var exec = require('child_process').exec;

/**
 * Get a list of NFS mounted drives
 */
function getMountedDrives(types, callback) {

  function parseOut(err, stdout, stderr) {

    if (err || stderr)
      throw err || stderr;

    var lines = stdout.split('\n');

    var drives = [];

    lines.forEach(function(line, index) {
      var paths = line.match(/(?:.*\:)?(.*) on (\/(?:[a-zA-Z0-9\-]+)?)/);

      if (!paths)
        return;

      var mountPath = paths[1];
      var realPath  = paths[2];

      drives.push({
        mountPath : mountPath,
        realPath  : realPath
      });

    });

    callback(null, drives);
  }

  exec('mount -t ' + types.join(','), parseOut);
}

/**
 * Checks if a path is on a mounted drive
 */
function isOnNetworkDrive(path, callback) {

  getMountedDrives(['nfs'], function(err, drives) {

    // reduce drives to array of realPaths
    var paths = _.reduce(drives, function(result, drive) {
      result.push(drive.realPath);
      return result;
    }, []);

    var match = false;

    // figure out of path starts with one of the realPaths
    _.each(paths, function(p) {
      if (path.indexOf(p) === 0) {
        match = true;
      }
    });

    callback(err, match);
  });

}

isOnNetworkDrive(process.cwd(), function(err, bool) {
  console.log(err, bool);
});