can now save our PID into a file to help external scripts
can now save our PID into a file to help external scripts

dneiter/exabgp,blablacar/exabgp,dneiter/exabgp,chrisy/exabgp,fugitifduck/exabgp,dneiter/exabgp,earies/exabgp,benagricola/exabgp,chrisy/exabgp,lochiiconnectivity/exabgp,fugitifduck/exabgp,lochiiconnectivity/exabgp,chrisy/exabgp,PowerDNS/exabgp,benagricola/exabgp,lochiiconnectivity/exabgp,earies/exabgp,fugitifduck/exabgp,blablacar/exabgp,benagricola/exabgp,PowerDNS/exabgp,blablacar/exabgp,PowerDNS/exabgp,earies/exabgp