title: Offset from GMT standard time
body: <p>Does Unix store the offset of the machine from GMT internally?
  like for eg:india standard time is GMT + 5:30.is this 5:30 stored some where?</p>
  
  <p>i need this to use it in a script like below</p>
  
  <pre><code>if[[ off is "some value"]]
  then
  some statements
  fi
  </code></pre>