title: nvm not able to change the system node version using nvm
body: <p>I am working on some remote linux server, where I want to set node v8.0.0. But it seems this has been set to use v0.10.35 and how much ever I try to use nvm use and set different node version, it doesn't work. </p>
  
  <p>Here are the simple code and output:</p>
  
  <pre><code>jk@:$ nvm debug
  nvm --version: v0.32.0
  $SHELL: /bin/bash
  $HOME: /home/jk
  $NVM_DIR: '$HOME/.nvm'
  $PREFIX: ''
  $NPM_CONFIG_PREFIX: ''
  nvm current: system
  which node: /usr/bin/node
  which iojs: which: no iojs in (/data/thirdparty/gcc-6.1.0/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:$HOME/bin)
  which npm: /usr/bin/npm
  npm config get prefix: Error: ENOENT, stat '$NVM_DIR/versions/node/v8.0.0'
  npm root -g: $NVM_DIR/versions/node/v8.0.0/lib/node_modules
  
  jk@:~$ nvm list
           v6.1.0
           v6.6.0
           v8.0.0
  -&gt;       system
  default -&gt; v8.0.0
  system -&gt; 8.0.0 (-&gt; v8.0.0)
  node -&gt; stable (-&gt; v8.0.0) (default)
  stable -&gt; 8.0 (-&gt; v8.0.0) (default)
  iojs -&gt; N/A (default)
  lts/* -&gt; lts/argon (-&gt; N/A)
  lts/argon -&gt; v4.8.7 (-&gt; N/A)
  lts/boron -&gt; v6.12.2 (-&gt; N/A)
  lts/carbon -&gt; v8.9.3 (-&gt; N/A)
  jk@:~$ node -v
  v0.10.35
  jk@:~$ nvm use 8.0.0
  Now using node v8.0.0 (npm v1.4.28)
  jk@:~$ node -v
  v0.10.35
  </code></pre>
  
  <p>I checked my ./bashrc file etc, but completely clueless why nvm use doesn't working and which file is actually overwriting this.</p>