[root@tellus ~]# gdb /usr/sbin/asterisk
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This GDB was configured as "x86_64-unknown-linux-gnu"...Using host libthread_db library "/lib64/tls/libthread_db.so.1".

(gdb) bt
No stack.
(gdb) se
search        section       select-frame  set
(gdb) set breakpoint
(gdb) run
Starting program: /usr/sbin/asterisk
[Thread debugging using libthread_db enabled]
[New Thread 48005112096768 (LWP 3660)]
Asterisk already running on /var/run/asterisk.ctl.  Use 'asterisk -r' to connect.

Program exited with code 01.
(gdb)