http://voorloopnul.com/blog/a-python-netstat-in-less-than-100-lines-of-code/ https://matt.sh/netmatt https://github.com/giampaolo/psutil/blob/master/scripts/netstat.py https://github.com/da667/netstat/blob/master/netstat.py https://staaldraad.github.io/2017/12/20/netstat-without-netstat/ https://gist.githubusercontent.com/staaldraad/4c4c80800ce15b6bef1c1186eaa8da9f/raw/8b3febd48de46efc82bbf4c13ed38940782ec042/awk_netstat.sh https://unix.stackexchange.com/questions/435579/is-there-documentation-for-proc-net-netstat-and-proc-net-snmp