ubuntu setup

sudo htop

Update sistem

sudo apt update
sudo apt upgrade --yes

🐋 Install docker

sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

🐋 Install docker-compose

sudo curl -L "https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
docker-compose --version

Create admin user

👤 Create a new user name admin and add home files and bash

useradd -m admin -s /bin/bash -g admin

🔐 Add passwor to new user admin

passwd admin

🥷🏻 Add sudo group

usermod -aG sudo admin

📄 Copy shh to login

rsync --archive --chown=admin:admin ~/.ssh /home/admin

Delete user

☠️ Delete user

userdel admin -r admin

👁 View passwords to user in the machine

cat /etc/passwd

Install firewall

ufw app list

Output Available applications: OpenSSH

ufw allow OpenSSH

ufw enable

ufw status

Output Status: active

To Action From

---

OpenSSH ALLOW Anywhere OpenSSH (v6) ALLOW Anywhere (v6)

SSH

🔐 Copy public key ssh to server [-p] to port

ssh-copy-id [email protected]

🪤 Delete login to password

nano /etc/ssh/ssh_config

File ssh_config

 PasswordAuthentication no
 PermitEmptyPasswords no
 PermitRootLogin no

sudo systemctl restart ssh

📓 File save public ssh rsa keys in /home/$USER/.ssh

Git

🧠 guardar credenciales

git config --global credential.helper store

git config --global credential.helper cache