su asterisk
root@test:/usr/src# asterisk -rvvvvv
Asterisk 13.14.1~dfsg-2, Copyright (C) 1999 - 2014, Digium, Inc. and others.
Created by Mark Spencer <markster@digium.com>;
Asterisk comes with ABSOLUTELY NO WARRANTY; type 'core show warranty' for details.
This is free software, with components licensed under the GNU General Public
License version 2 and other licenses; you are welcome to redistribute it under
certain conditions. Type 'core show license' for details.
=========================================================================
Connected to Asterisk 13.14.1~dfsg-2 currently running on test (pid = 1011)
test*CLI>

Checking if Asterisk is running and we can talk to it as the 'asterisk' user...Error!
Error communicating with Asterisk.  Ensure that Asterisk is properly installed and running as the asterisk user
Asterisk appears to be running as asterisk
Try starting Asterisk with the './start_asterisk start' command in this directory

root@test:/usr/src/freepbx# ps aux |grep asterisk
asterisk   568  0.0  0.3 140900  7124 ?        S    05:28   0:00 /usr/sbin/apache2 -k start
asterisk   569  0.0  0.3 140900  7124 ?        S    05:28   0:00 /usr/sbin/apache2 -k start
asterisk   570  0.0  0.3 140900  7124 ?        S    05:28   0:00 /usr/sbin/apache2 -k start
asterisk   571  0.0  0.3 140900  7124 ?        S    05:28   0:00 /usr/sbin/apache2 -k start
asterisk   572  0.0  0.3 140900  7124 ?        S    05:28   0:00 /usr/sbin/apache2 -k start
asterisk  1011  2.4  3.3 226880 69476 pts/1    Sl   05:39   0:04 /usr/sbin/asterisk -f -U asterisk -G asterisk -vvvg -c