title: (CRON) error (can't fork)
body: <p>Ubuntu 16.</p>
  
  <pre><code>sudo crontab -e
  * * * * * uptime &gt;&gt; /www/w100/log/uptime.log
  </code></pre>
  
  <p>But nothing happens (uptime >> /www/w100/log/uptime.log work's fine).</p>
  
  <pre><code>grep CRON /var/log/syslog
  May 20 21:39:01 cs25795 CRON[28233]: (CRON) error (can't fork)
  </code></pre>
  
  <p>Why my cron is so buggy? (</p>