netstack

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linux user

usermod -a -G examplegroup exampleusername

usermod -aG sudo username

useradd appadmin1 -u 4100 -g 4100 -m -s /bin/bash

• https://stackoverflow.com/questions/23601844/how-to-create-user-in-linux-by-providing-uid-and-gid-options
• https://linuxize.com/post/how-to-list-groups-in-linux/

ssh

ssh server

• check status

  systemctl status sshd
  

  ps -e | grep sshd
  

• check port

  ss -tulnp | grep LISTEN
  

  netstat -tulnp | grep LISTEN
  

• check firewall

  sudo ufw status verbose
  

  sudo ufw status numbered
  

• open port

  sudo ufw allow 22/tcp
  

  sudo ufw allow ssh
  

• install sshd

  sudo apt install openssh-server
  

  sudo systemctl enable ssh --now
  

• install if rpi

  sudo raspi-config
  

• enable fw

  sudo ufw enable
  

ssh key

ssh-keygen -t ed25519-C "your_email@example.com"

git setup

git config --global user.name "your name"

git config --global user.email "your_email@example.com"

• add pub key to github https://github.com/settings/keys
• set remote to use ssh
• check where remote is set

  git remote -v
  

• set remote to ssh url

  git remote set-url origin git@github.com:2cld/ai.git