title: grep limited characters - one line
body: <p>I want to look up a word in multiple files, and return only a single line per result, or a limited number of characters (40 ~ 80 characters for example), and not the entire line, as by default.</p>
  
  <pre><code>grep -sR 'wp-content' .
  
  file_1.sql:3309:blog/wp-content 
  file_1.sql:3509:blog/wp-content 
  file_2.sql:309:blog/wp-content 
  </code></pre>
  
  <p>Currently I see the following:</p>
  
  <pre><code>grep -sR 'wp-content' .
  
  file_1.sql:3309:blog/wp-content-Progressively predominate impactful systems without resource-leveling best practices. Uniquely maximize virtual channels and inexpensive results. Uniquely procrastinate multifunctional leadership skills without visionary systems. Continually redefine prospective deliverables without.
  file_1.sql:3509:blog/wp-content-Progressively predominate impactful systems without resource-leveling best practices. Uniquely maximize virtual channels and inexpensive results. Uniquely procrastinate multifunctional leadership skills without visionary systems. Continually redefine prospective deliverables without. 
  file_2.sql:309:blog/wp-content-Progressively predominate impactful systems without resource-leveling best practices. Uniquely maximize virtual channels and inexpensive results. Uniquely procrastinate multifunctional leadership skills without visionary systems. Continually redefine prospective deliverables without.
  </code></pre>