tumblr-post.js

#!/usr/bin/env node

var Tumblr = require('tumblrwks');
var fs = require('fs');

var tumblr = new Tumblr(
  {
    consumerKey: 'xxxxxxxxxxxxx',
    consumerSecret: 'xxxxxxxxxxxxxx',
    accessToken: 'xxxxxxxxxxxxxx',
    accessSecret: 'xxxxxxxxxxxxxx'
  }, "hoge.tumblr.com"
);

var upload_file = fs.readFileSync(process.argv[2]);
tumblr.post('/post', {type: 'photo', data: [upload_file]}, function(err, json){
      console.log(json);
      tumblr.get('/posts', {limit:1, type: 'photo'}, function(err,json){
          console.log(json.posts[0].post_url);
      });
});