Snippets for Linux

Add SSH key

echo "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAACAQCyXBfD7AHJfIoM+azNhaI2UMfYtCBCgMUFpLyF+n2AVWUMViQXfpsKngOExDeRCR+lD4ooVbbHegYg7sZ7LaOKpcLewSNWiV7cagI0O7KI4FLhee+ZPQ6X7HLN17T1MoDFaeJGZB39U/wZSrVVgii0QbaW2TbAn/Xg0OAU1It+RPfuchQf+tH8pFV/qnHToSfrq9U2+nCuD/37Prw0ctKNiVwImqY/YF29o+/qwn3vD3KnByDM0fKTKxQ1/e5ihVFsq6Og1L0HvHr4ycD0Y9DEHZYaBAvAunzdo68EcdAoh4EnCZxoC+3OOX/d4jiFadlMSQ8/0TKR0xXScjnMmxUCoE2bUnvJK9pa/oTL7pT3MU3/3P061SrUbinXJDH/H2AGUGbgnbrNvOcrwEgG9njTxIRwDoXKFKqctpG+D0kEibImYBsbVXssBwBv0uBL+4cSNF4DMPGd6SHKsF/Ro3uSQgiUk57glv6R1Y6oVTEOPrDeJ5MuVlHQzU6cBLGASpi7wS2dN8rLVQXd5fNmVSR0Ry4Ihh85doGsrB61zB9HxqTxWkL8VngqBNPf8Vk+DMG1pXTF4oB9P8f394KfoF9uEg6nNowNKJEjvsP5DGfx63upGoEr+TasyrpemLbv1OyQOE0qLHGnJrV3MQ4fX15Vp2DKKTNx45EJUFzWXNzlFw== [email protected]" >> ~/.ssh/authorized_keys

Enable key only login

sudo nano /etc/ssh/sshd_config

PasswordAuthentication no 
ChallengeResponseAuthentication no 
PubkeyAuthentication yes 
UsePAM no

sudo systemctl restart sshd

ls permissions

ls -lahn

Update docker container without Downtime

docker-compose pull && docker-compose up --force-recreate --build -d && docker image prune -f

Debian update

apt-get update && apt-get upgrade

Debian upgrade

apt-get update && apt-get upgrade && apt-get dist-upgrade

Restart service

sudo systemctl restart pveproxy.service #for example