ps | grep tcpdump.bin always returns null.

[rahulpawar1989]

When i press STOP Capture button, capturing process doesn't stops as ps | grep tcpdump.bin always returns null. So kill command is not executing . Can you please help me in resolving this.

[sea-sol]

same as my side.
I can't get any pcap data.
Implement without -w flag or stop/restart capture returns same.
always return null :(