title: How to use a variable in an awk expression
body: <p>I'm trying to make this command:</p>
  
  <pre><code>sed bla bla filename | awk '{printf "%s %s_entry_%.3f %.3f %.3f %.3f",$1,$3,$4,$5,$6,$7}'
  </code></pre>
  
  <p>But the thing is, i want the %.3f part to be variable. So in one case it could be %.3f and in another it could be %.3f %.3f %.3f. So i'll just use a static one in my example code for clarity. So if i want 4 of these %.3f and put them in variable $values like so:</p>
  
  <pre><code>values="%.3f %.3f %.3f %.3f"
  </code></pre>
  
  <p>Then how can I put this string in the awk expression, without making awk to just put literally "${values}" in there. The following is my non-working-attempt:</p>
  
  <pre><code>sed bla bla filename | awk '{printf "%s %s_entry_${values}",$1,$3,$4,$5,$6,$7}'
  </code></pre>