how to capture bigtop output to file

e.g.

[root@ve11b:Active:In Sync] tmp  bigtop -n -scroll 0<&- > /var/tmp/bigtop.out
^C
[root@ve11b:Active:In Sync] tmp  cat /var/tmp/bigtop.out
                            |  bits  since       |  bits  in prior    |  current
                            |  Feb 19 18:55:48   |  0 seconds         |  time
BIG-IP      ACTIVE          |---In----Out---Conn-|---In----Out---Conn-|  18:46:41
ve11b.acme.local             6.110G 674.8M   1011      0      0      0

VIRTUAL ip:port             |---In----Out---Conn-|---In----Out---Conn-|-Nodes Up--
/Common/172.28.24.10:80       46256  92584     10      0      0      0      2
/Common/0.0.0.0:any               0      0      0      0      0      0      0

NODE ip:port                |---In----Out---Conn-|---In----Out---Conn-|--State----
/Common/200.200.200.101:8080  16760  54760      2      0      0      2 UNCHECKED
/Common/200.200.200.111:8080   7424  10976      2      0      0      2 UNCHECKED
/Common/200.200.200.111:80        0      0      0      0      0      0 UNCHECKED
                            |  bits  since       |  bits  in prior    |  current
                            |  Feb 19 18:55:48   |  4 seconds         |  time
BIG-IP      ACTIVE          |---In----Out---Conn-|---In----Out---Conn-|  18:46:45
ve11b.acme.local             6.111G 674.8M   1011 239080      0      0

VIRTUAL ip:port             |---In----Out---Conn-|---In----Out---Conn-|-Nodes Up--
/Common/172.28.24.10:80       46256  92584     10      0      0      0      2
/Common/0.0.0.0:any               0      0      0      0      0      0      0

NODE ip:port                |---In----Out---Conn-|---In----Out---Conn-|--State----
/Common/200.200.200.101:8080  16760  54760      2      0      0      2 UNCHECKED
/Common/200.200.200.111:8080   7424  10976      2      0      0      2 UNCHECKED
/Common/200.200.200.111:80        0      0      0      0      0      0 UNCHECKED
                            |  bits  since       |  bits  in prior    |  current
                            |  Feb 19 18:55:48   |  4 seconds         |  time
BIG-IP      ACTIVE          |---In----Out---Conn-|---In----Out---Conn-|  18:46:49
ve11b.acme.local             6.111G 674.8M   1011 247816   8096      0

VIRTUAL ip:port             |---In----Out---Conn-|---In----Out---Conn-|-Nodes Up--
/Common/172.28.24.10:80       46256  92584     10      0      0      0      2
/Common/0.0.0.0:any               0      0      0      0      0      0      0

NODE ip:port                |---In----Out---Conn-|---In----Out---Conn-|--State----
/Common/200.200.200.101:8080  16760  54760      2      0      0      2 UNCHECKED
/Common/200.200.200.111:8080   7424  10976      2      0      0      2 UNCHECKED
/Common/200.200.200.111:80        0      0      0      0      0      0 UNCHECKED
                            |  bits  since       |  bits  in prior    |  current
                            |  Feb 19 18:55:48   |  4 seconds         |  time
BIG-IP      ACTIVE          |---In----Out---Conn-|---In----Out---Conn-|  18:46:53
ve11b.acme.local             6.111G 674.8M   1011 240800      0      0

VIRTUAL ip:port             |---In----Out---Conn-|---In----Out---Conn-|-Nodes Up--
/Common/172.28.24.10:80       46256  92584     10      0      0      0      2
/Common/0.0.0.0:any               0      0      0      0      0      0      0

NODE ip:port                |---In----Out---Conn-|---In----Out---Conn-|--State----
/Common/200.200.200.101:8080  16760  54760      2      0      0      2 UNCHECKED
/Common/200.200.200.111:8080   7424  10976      2      0      0      2 UNCHECKED
/Common/200.200.200.111:80        0      0      0      0      0      0 UNCHECKED
                            |  bits  since       |  bits  in prior    |  current
                            |  Feb 19 18:55:48   |  4 seconds         |  time
BIG-IP      ACTIVE          |---In----Out---Conn-|---In----Out---Conn-|  18:46:57
ve11b.acme.local             6.112G 674.8M   1011 357760      0      0