Installing Flent on Ubuntu 21.04

flent_install.txt

sudo add-apt-repository universe
sudo add-apt-repository multiverse
sudo apt update
sudo apt install iperf
sudo apt install netperf
sudo apt install flent
# first try, success!
flent tcp_download -p totals -l 60 -H netperf-eu.bufferbloat.net -t my-first-flent -o first.png
# tried the gui:
flent-gui
# got error:
ERROR: unable to find a usable Qt version
# mucked about a lot, but found:
sudo apt install python3-qtpy
flent-gui
# (this now starts the gui)
# nice commands
flent --version