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Debian Server Setup

For linux common commands, see Linux Common Commands

  1. Update Source

    apt update --yes && apt upgrade --yes
  2. Install sudo package

    apt install -y sudo
  3. Open BBR: Open BBR for Debian

  4. Use ssh key login instead of password, for more details see How To Configure SSH Key-Based Authentication on a Linux Server

  5. In your local machine:

ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]_host
  1. Change the default password

    1. passwd
  2. Create an admin group

    1. groupadd admin
    2. Give admin group root access, and no password sudo
      1. Backup sudo files cp /etc/sudoers /root/sudoers.bak
      2. Edit the /etc/sudoers file by typing the command: visudo
      3. Add %admin ALL=(ALL:ALL) NOPASSWD:ALL after sudo group
  3. Create a admin group user

    1. useradd username -g admin
  4. Use ssh key login instead of password for normal user

    1. ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]_host
  5. Login with new normal user ssh [email protected]

  6. Install common utils:

    1. sudo apt install build-essential software-properties-common curl vim unzip --yes
  7. Create /data for store data files with 777 permissions, avoid to use /home directory

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Last updated on 8/31/2021