apt-get install tshark
==== usage: ====
tshark [ -i |- ] [ -f ] [ -2 ] [ -r ] [ -w |- ] [ options ] [ ]
from [[https://www.wireshark.org/docs/man-pages/tshark.html]]
=== examples ===
tshark -i eth0 -w /home/root/20200514_2236_n02s2svpn_eth0.pcap