index2.js

const os = require('os')
const path = require('path')
const IPFS = require('ipfs')

const fileMultihash = process.argv[2]

const node = new IPFS(path.join(os.tmpDir() + '/' + new Date().toString()))

node.version((err, version) => {
  if (err) return console.error(err)

  console.log('IPFS Version:', version.version)

  node.init({ emptyRepo: true, bits: 2048 }, err => {
    if (err) return console.error(err)

    node.load(err => {
      if (err) return console.error(err)

      node.goOnline(err => {
        if (err) return console.error(err)
        console.log('Node is online')

        if (node.isOnline()) {
          console.log('Node is now ready and online')

          node.files.cat(fileMultihash, (err, stream) => {
            if (err) return console.error(err)

            console.log('File content:')
            stream.pipe(process.stdout)
            stream.on('end', process.exit)
          })
        }
      })
    })
  })
})