Skip to content

Debian 12 Setup Guide.md

Latest commit

 

History

History
286 lines (199 loc) · 3.86 KB

Debian 12 Setup Guide.md

File metadata and controls

286 lines (199 loc) · 3.86 KB

Debian 12 Setup Guide

This guide outlines the steps to set up a basic Debian 12 system: configuring networking, enabling SSH, and installing essential utilities like Zsh.

Install Network Manager

apt install network-manager

Try running nmtui

nmtui

1. SSH into the Debian System

ssh root@192.168.1.25

2. Check System Architecture

dpkg --print-architecture

3. Update and Upgrade the System

apt update
apt upgrade -y

4. Install Basic Tools

apt install bash nano net-tools -y

5. Install SSH Server and Client

apt install openssh-server openssh-client ssh -y

Edit SSH configuration if needed:

nano /etc/ssh/sshd_config

Add this line at the end of the file:

PermitRootLogin yes

Also ensure PasswordAuthentication is enabled. Uncomment and set:

PasswordAuthentication yes

Enable and start SSH:

systemctl enable ssh
systemctl start ssh
systemctl restart ssh

6. Configure Network Interfaces

Edit the interfaces file:

nano /etc/network/interfaces

Example configuration:

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface (enp0s3)
allow-hotplug enp0s3
iface enp0s3 inet static
    address 192.168.1.25
    netmask 255.255.255.0
    network 192.168.1.0
    broadcast 192.168.1.255
    gateway 192.168.1.1
    dns-nameservers 8.8.8.8
iface enp0s3 inet6 auto

# The secondary network interface (enp0s8)
allow-hotplug enp0s8
iface enp0s8 inet static
    address 192.168.2.10
    netmask 255.255.255.0
    network 192.168.2.0
    broadcast 192.168.2.255
    dns-nameservers 8.8.8.8
iface enp0s8 inet6 auto

7. Configure DNS Resolver

nano /etc/resolv.conf

Example content:

nameserver 8.8.8.8

8. Restart Network Services

systemctl restart networking

Bring interfaces down and up:

ifdown enp0s3 && ifup enp0s3
ifdown enp0s8 && ifup enp0s8

Reboot:

reboot

9. SSH from a Different User

ssh nikhil@192.168.1.21

Switch to root:

su - root

10. Configure APT Sources

Edit the source list:

nano /etc/apt/sources.list

Install HTTPS transport support:

apt install apt-transport-https -y

Example Debian 11 (Bullseye) source list:

deb cdrom:[Debian GNU/Linux 11.6.0 _Bullseye_ Official amd64 NETINST] bullseye main
deb http://deb.debian.org/debian/ bullseye main
deb-src http://deb.debian.org/debian/ bullseye-updates main

Example Debian 12 (Bookworm) source list:

deb https://deb.debian.org/debian/ bookworm main non-free-firmware
deb-src http://deb.debian.org/debian/ bookworm main non-free-firmware

11. Install Useful Utilities

apt install nano fonts-lato fonts-open-sans fonts-roboto fonts-mononoki fonts-indic zsh net-tools curl wget unzip -y

Reconnect if needed:

ssh root@192.168.1.21

12. Install Zsh and Plugins

Check current shell:

echo $SHELL

View available shells:

cat /etc/shells

Install Zsh and plugins:

apt install zsh zsh-autosuggestions zsh-syntax-highlighting -y

Check version and path:

zsh --version
which zsh

13. Set Zsh as Default Shell

Set for current user:

chsh -s $(which zsh)

Verify:

grep zsh /etc/passwd

14. Configure Zsh

Edit Zsh config:

nano /root/.zshrc

source ~/.zshrc

export PS1='%n@%m# '


For another user:

```bash
su - nikhil

chsh -s $(which zsh)

nano /home/nikhil/.zshrc