title: Command to replace specific column of csv file for first 100 rows
body: <p>Following command is replacing second column with value e in a complete csv file, 
  but what if i want to replace only in first 100 rows.</p>
  
  <pre><code>awk -F, '{$2="e";}1' OFS=, file
  </code></pre>
  
  <p>Rest of the rows of csv file should be intact..</p>