title: node.js and express -bash: /usr/bin/express: No such file or directory
body: <p>I started a Digital Ocean droplet  from the node.js image ( w ubuntu 14.04)
  checking it, I get :</p>
  
  <pre><code>$ node -v
    v4.3.0
  </code></pre>
  
  <p>Then , I tried to install the latest version of express.js :</p>
  
  <pre><code>    $ sudo npm install -g express
      express@4.13.4 /usr/lib/node_modules/express
      ├── escape-html@1.0.3
      ├── array-flatten@1.1.1
      ├── cookie-signature@1.0.6
      ├── utils-merge@1.0.0
      ├── content-type@1.0.1
      ├── merge-descriptors@1.0.1
      ├── vary@1.0.1
      ├── methods@1.1.2
      ├── fresh@0.3.0
      ├── etag@1.7.0
      ├── parseurl@1.3.1
      ├── path-to-regexp@0.1.7
      ├── cookie@0.1.5
      ├── content-disposition@0.5.1
      ├── range-parser@1.0.3
      ├── serve-static@1.10.2
      ├── depd@1.1.0
      ├── qs@4.0.0
      ├── on-finished@2.3.0 (ee-first@1.1.1)
      ├── finalhandler@0.4.1 (unpipe@1.0.0)
      ├── debug@2.2.0 (ms@0.7.1)
      ├── proxy-addr@1.0.10 (forwarded@0.1.0, ipaddr.js@1.0.5)
      ├── send@0.13.1 (destroy@1.0.4, statuses@1.2.1, ms@0.7.1, mime@1.3.4, http-errors@1.3.1)
      ├── type-is@1.6.11 (media-typer@0.3.0, mime-types@2.1.10)
      └── accepts@1.2.13 (negotiator@0.5.3, mime-types@2.1.10)
  </code></pre>
  
  <p>but when I check express version , I get an error :</p>
  
  <pre><code>  $ express -v
   -bash: /usr/bin/express: No such file or directory
  </code></pre>
  
  <p>what could be wrong ? thanks for feedback </p>
  
  <p>UPDATE ---</p>
  
  <p>I uninstalled&amp; reinstalled node.js :</p>
  
  <pre><code>curl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash -
  sudo apt-get install -y nodes
  $ node -v
  v4.3.1
  </code></pre>
  
  <p>but same issue </p>
  
  <p>sudo npm install -g express
     express@4.13.4 /usr/lib/node_modules/express
     ...
     $ express -v
     -bash: /usr/bin/express: No such file or directory</p>