Using pktstat with Bash [a real-time look at interface activity] Presented by Dave Mawdsley, DACS Member, Linux SIG Member January 21, 2015

What is pktstat? From the man page: 1 From the man page: “The pktstat program displays a real-time summary of packet activity on an interface. Each line displays the data rate associated with different classes of packets.”

Install pktstat with Ubuntu 2 Install pktstat with Ubuntu Installing pktstat is easy. Since the administrative utility is in the Ubuntu repositories, using terminal, issue the command: sudo apt-get install pktstat

A Useful First Command with pktstat 3 A Useful First Command with pktstat Next to study the computer's input/output via wireless, issue the command: sudo pktstat -i wlan0 Follow this with shift + ? to get the bottom menu.

4 A Screenshot I used Firefox to visit The New York Times and got:

Another Example Next I decided to investigate traffic on port 80 with: 5 Next I decided to investigate traffic on port 80 with: sudo pktstat -n -i wlan0 "port 80"

6 A Few pktstat Options pktstat [-1BcFlnpPtT] [-a abbrev] [-A file] [-i interface] [-k keeptime] [-m maxbps] [-w waittime] [filter-expr] Best to read man pktstat for complete details. I used the bottom menu and pressed the w key and gave the dialog 10. (keep the screen for 10 seconds)

Using pktstat with Bash 11 Using pktstat with Bash [a real-time look at interface activity] This OpenOffice.org Presentation pktstat.odp' can be downloaded from http://madmod.com/freebies.html