title: Awk : recovery line with condition
body: <p>I would like to create a file from another file by keeping only some lines that match with a pattern in a column.</p>
  
  <p>A part of base file:</p>
  
  <pre><code>"1","rs543921925","ENSG00000187634","ENST00000616125","intron_variant"
  "2","rs543921925","ENSG00000187634","ENST00000620200","intron_variant"
  "3","rs543921925","ENSG00000187634","ENST00000617307","intron_variant"
  "4","rs146327803","ENSG00000187634","ENST00000420190","missense_variant"
  "5","rs146327803","ENSG00000187634","ENST00000437963","missense_variant"
  "6","rs146327803","ENSG00000187634","ENST00000342066","missense_variant"
  "7","rs146327803","ENSG00000187634","ENST00000618181","missense_variant"
  </code></pre>
  
  <p>File that I want:</p>
  
  <pre><code>"4","rs146327803","ENSG00000187634","ENST00000420190","missense_variant"
  "5","rs146327803","ENSG00000187634","ENST00000437963","missense_variant"
  "6","rs146327803","ENSG00000187634","ENST00000342066","missense_variant"
  "7","rs146327803","ENSG00000187634","ENST00000618181","missense_variant"
  </code></pre>
  
  <p>I've tried:</p>
  
  <pre><code>awk -F'"' '$9 ~ /missense_variant/ { print $0 }'base_file.txt
  </code></pre>
  
  <p>But it doesn't work.</p>