title: How to replace string with incremental value in shell script using awk
body: <p>In unix i am doing a grep ticketnumber filename</p>
  
  <p>I get "ticketnumber": 123</p>
  
  <p>I replace 123 with 124 - using sed -i 's/123/124/g'  filename</p>
  
  <p>How can I do this in awk in a shell script</p>