https://i.redd.it/30ogy2a7cya21.png
https://www.reddit.com/r/linux/comments/agw26l/understanding_debian_the…

no ficheiro de configuração do servidor ssh adicionar:
Match User even-more-restricted-guy
PermitOpen 127.0.0.1:12345
X11Forwarding no
AllowAgentForwarding no
ForceCommand /bin/false

https://unix.stackexchange.com/questions/14312/how-to-restrict-an-ssh-u…

tracker daemon -t
cd ~/.config/autostart
cp -v /etc/xdg/autostart/tracker-*.desktop ./
for FILE in tracker-*.desktop; do echo Hidden=true >> $FILE; done
rm -rf ~/.cache/tracker ~/.local/share/tracker
tracker status

https://gist.github.com/vancluever/d34b41eb77e6d077887c

descarregar o pacote de: https://go.microsoft.com/fwlink/p/?linkid=2112886

para instalar executar o comando:
dpkg -i /home/francisco/Transferências/teams_1.3.00.5153_amd64.deb

instalamos o pacote sysstat:
apt install sysstat

ativamos a recolha de dados:
sed -i 's/ENABLED="false"/ENABLED="true"/' /etc/default/sysstat

alteramos a recolha de dados de 10 em 10 minutos para 2 substituindo no ficheiro /etc/cron.d/sysstat a linha:
5-55/10 * * * * root command -v debian-sa1 > /dev/null && debian-sa1 1 1

por:
*/2 * * * * root command -v debian-sa1 > /dev/null && debian-sa1 1 1

https://www.debian.org/doc/manuals/securing-debian-howto/ch1.en.html
faq - https://www.debian.org/doc/manuals/securing-debian-howto/ch12.en.html

para desativar a suspensão:
systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target

para ativar:
systemctl unmask sleep.target suspend.target hibernate.target hybrid-sleep.target

https://askubuntu.com/questions/47311/how-do-i-disable-my-system-from-g…

dpkg -l | grep "^rc" | awk '{print $2}' | sudo xargs dpkg -P

https://www.ostechnix.com/remove-unnecessary-configuration-files-on-deb…

apt update -y && apt full-upgrade -y && apt install gnupg2 -y && wget -qO - https://download.jitsi.org/jitsi-key.gpg.key | apt-key add - && sh -c "echo 'deb https://download.jitsi.org unstable/' > /etc/apt/sources.list.d/jitsi-unstable.list" && apt update -y && apt install jitsi-meet -y

alterar o ficheiro /etc/systemd/system.conf e adicionar o que se segue:
DefaultLimitNOFILE=65000
DefaultLimitNPROC=65000
DefaultTasksMax=65000

para o Francisco ter vídeo no chrome:
sudo rmmod v4l2loopback
sudo modprobe v4l2loopback exclusive_caps=1
ffmpeg -f v4l2 -i /dev/video0 -vf "vflip" -f v4l2 /dev/video1

para o Francisco ter vídeo no skype:
LIBV4LCONTROL_FLAGS=3 && LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libv4l/v4l1compat.so skypeforlinux

para o Francisco ter vídeo no cheese:
LIBV4LCONTROL_FLAGS=3 && LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libv4l/v4l1compat.so cheese