title: How to add timestamp to the actual build log file under "jobs" folder under Jenkins home directory?
body: <p>I am using Jenkins to automate our build and release process. </p>
  
  <p>While executing a job under Jenkins, timestamp is not shown in the console build log.<br/><br/> To add timestamp to console build log, I have downladed "Timestamper" plugin and enabled "Add timestamps to the Console Output" option in each of my jobs' configurations under Jenkins. Now the timestamp is appened to the console build log in Jenkins.</p>
  
  <p>But when I checked the same build log file in the "jobs" folder under Jenkins home directory, the timestamp in not appeneded in the log file.<br/><br/> As this log file is attached with job build details while sending mail to stakeholders, it is inevitable to add timestamp in the log file.</p>
  
  <p>Please check the below contents.</p>
  
  <p>In Console Build Log</p>
  
  <pre><code>15:40:04 Started by user TEST
  15:40:04 [EnvInject] - Loading node environment variables.
  15:40:04 Building in workspace C:\jenkins\workspace
  15:40:04 No emails were triggered.
  </code></pre>
  
  <p>In Actual Log File</p>
  
  <pre><code>Started by user TEST
  [EnvInject] - Loading node environment variables.
  Building in workspace C:\jenkins\workspace
  No emails were triggered.
  </code></pre>
  
  <blockquote>
    <h2>So, I have two questions</h2>
    
    <ol>
    <li>How to enable "Add timestamps to the Console Output" option as one time process to all Jobs as I have more jobs in Jenkins?</li>
    <li>How to add timestamp to the actual build log file under "jobs" folder under Jenkins home directory?</li>
    </ol>
  </blockquote>
  
  <p>Thanks in advance.</p>