title: Remove double quotes from txt file
body: <p>I have a file that contains unwanted double quotes around the column values. I need to remove them. Could someone help me on this?</p>
  
  <p>The data is in below format</p>
  
  <p><code>column1   date        picture      value</code>
  <code>
  "A"    "2016-06-02"    "books"      932422
  "B"    "2016-06-03"    "movies"     934735
  "C"    "2016-06-04"    "vidoes"     936025
  "D"    "2016-06-05"    "movies"     937620
  "E"    "2016-06-06"    "dvd"        938972
  "F"    "2016-06-07"    "vidoes"     940274</code></p>
  
  <p>And I want to the data to be like:</p>
  
  <p><code>column1 date  picture      value</code>
  <code>
  A   2016-06-02    books      932422
  B   2016-06-03    movies     934735
  C   2016-06-04    vidoes     936025
  D   2016-06-05    movies     937620
  E   2016-06-06    dvd        938972
  F   2016-06-07    vidoes     940274</code></p>
  
  <p>Note that 4th column attribute do not have double quotes around them. </p>
  
  <p>Could somebody help me with removing these double quotes with one line shell scripting?</p>