title: Crontab is not working on Amazon EC2 server
body: <p>Crontab is not working on Amazon EC2 Linux Server.</p>
  
  <p>I have saved below codes in /etc/crontab file</p>
  
  <pre><code>crontab
  # For details see man 4 crontabs 
  # Example of job definition: 
  # .---------------- minute (0 - 59) 
  # | .------------- hour (0 - 23) 
  # | | .---------- day of month (1 - 31) 
  # | | | .------- month (1 - 12) OR jan,feb,mar,apr ... 
  # | | | | .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat 
  # | | | | | 
  # * * * * * user-name command to be executed 
  * 10 * * * tar cvfpz /home/backup/web_$(date +%Y%m%d).tar.gz /home/web
  </code></pre>
  
  <p>I have started crontab command already, but this one didn't work.</p>
  
  <p>I also have saved this line in "crontab -e" too, but cron won't work.</p>
  
  <pre><code>* 10 * * * tar cvfpz /home/backup/web_$(date +%Y%m%d).tar.gz /home/web
  </code></pre>
  
  <p>Is there anyone who had same experience like me?</p>
  
  <p>Thank you.</p>