title: UNIX wc -l with line length restriction
body: <p>I need to count the number of lines in a file, in a UNIX shell script, but I need the number of lines under 80 characters, and if there are more than 80 characters, count it as multiple lines.</p>
  
  <p>I know wc -l counts the number of lines, and I know there aren't any options to specify this kind of thing, so how would I do this?</p>