clientes:
apt install veyon-configurator

master:
apt install veyon-master

https://veyon.io/en/

http://rosangelamentapde.pbworks.com/f/tutorial_wq_escolabr1.pdf

https://en.wikipedia.org/wiki/HTTP_Strict_Transport_Security

https://www.youtube.com/watch?v=A2OxG2UjiV4

dnsmasq --help dhcp

fornecer rotas aos clientes por dhcp:
121,10.210.0.0/24,10.212.0.4

https://tools.ietf.org/html/rfc3442
https://forum.archive.openwrt.org/viewtopic.php?id=52541

ligou-se ao router às 16:30 do dia 23/10/2019
F6:86:26:A3:57:FF

git fetch upstream
git checkout master
git merge upstream/master
git push origin master

https://ardalis.com/syncing-a-fork-of-a-github-repository-with-upstream

https://help.github.com/en/github/collaborating-with-issues-and-pull-re…

verificar o progresso dum teste:
watch smartctl --capabilities /dev/sd(x)
errado!
devemos voltar a executar o comando:
smartctl -t long /dev/sd(x)

realizar um teste longo em background mode:
smartctl -t long /dev/sd(x)

https://github.com/containrrr/watchtower
https://github.com/pyouroboros

https://stackoverflow.com/questions/51364287/multiple-instances-of-trae…