gistfile1.txt

var tmp_path = req.files.uploadimgs.path,uuid;
  var target_path = './upload/work/'+uuid() +'.png';

if(req.files)
{
  mkdirp(newDir,0777,function(err){
    if(err) throw err;
  })
}
if(req.files)
{
   fs.rename(tmp_path, target_path,+req.files.uploadimgs.name,function(err){
    if(err) throw err;
  });

}