Disable System Integrity Protection (SIP)
Disable System Integrity Protection (SIP) avatar

Sometimes, when  performing a terminal command with sudo in OS X 10.11 (El Capitan) you ge a

permission denied

because of SIP. To disable this feature do the following steps: 

  1. Swith to recovery mode by rebooting and holding down CMD+R until the progress bar appears
  2. Open a Terminal by cklicking Utilities -> Terminal
  3. type csrutil disable
  4. Swith back to normal mode by rebooting