### Naming Schema for a Space Exploration Network
If you're setting up a network or system related to space exploration, you might use a naming schema like this:

- **Hostname**: `spaceship`
- **Domain Name**: `galaxy.local`
- **Subdomains**: 
  - `apollo.galaxy.local` (for historical missions)
  - `europa.galaxy.local` (for scientific research)
  - `starship.galaxy.local` (for future missions)
  - `hubble.galaxy.local` (for astronomical observations)

### Security Note
- **Username**: `astronaut`
- **Password**: `stardust123` (Remember to use a strong, unique password in a real setup!)

I hope these ideas help you develop a comprehensive and meaningful naming schema for your space exploration-related projects or systems!

---

### Theme: Space Exploration

#### Username: **astronaut**
#### Password: **stardust123** (Note: Use a strong password in a real setup)
#### Hostname: **spaceship**
#### Domain Name: **galaxy.local**

### Step-by-Step Opinionated Arch Linux Setup with Space Theme

Absolutely, minimizing direct interaction with the device is a great idea, especially for convenience and security. Let's prioritize getting SSH set up quickly so you can manage your system remotely. We'll follow through with the initial setup and then immediately configure SSH to ensure you can access your system remotely as soon as possible.

### Step-by-Step Opinionated Arch Linux Setup with Quick SSH Access

#### Step 1: Verify Boot Mode
Ensure your system is booting in UEFI mode:
```bash
ls /sys/firmware/efi/efivars
```
If this directory exists, you are in UEFI mode.

#### Step 2: Partition the Disk
Format and mount the partitions:
```bash
mkfs.fat -F32 /dev/sda1  # EFI partition
mkswap /dev/sda2         # Swap partition
mkfs.ext4 /dev/sda3      # Root partition

mount /dev/sda3 /mnt
mkdir /mnt/boot
mount /dev/sda1 /mnt/boot
swapon /dev/sda2
```

#### Step 3: Install the Base System
Install the base packages:
```bash
pacstrap /mnt base linux linux-firmware vim openssh
```

#### Step 4: Generate `fstab`
Generate the `fstab` file:
```bash
genfstab -U /mnt >> /mnt/etc/fstab
```

#### Step 5: Chroot into the New System
Change root into the new system:
```bash
arch-chroot /mnt
```

#### Step 6: Set Locale and Timezone
1. **Set locale**:
   - Edit `/etc/locale.gen` to uncomment your locale (e.g., `en_US.UTF-8`):
     ```bash
     vim /etc/locale.gen
     ```
   - Generate the locale:
     ```bash
     locale-gen
     ```

2. **Set timezone**:
   ```bash
   ln -sf /usr/share/zoneinfo/America/New_York /etc/localtime
   hwclock --systohc
   ```

#### Step 7: Set Hostname and Hosts
1. **Set hostname**:
   ```bash
   echo "spaceship.galaxy.local" > /etc/hostname
   ```

2. **Edit `/etc/hosts`**:
   ```bash
   vim /etc/hosts
   ```
   Add the following lines:
   ```
   127.0.0.1	localhost
   ::1		localhost
   127.0.1.1	spaceship.galaxy.local	spaceship
   ```

#### Step 8: Set Root Password
Set a strong password for the root user:
```bash
passwd
```
For this guide, we'll use `stardust123` as the root password.

#### Step 9: Create a Regular User Account
Create a user account and add it to the sudo group:
```bash
useradd -m astronaut
usermod -aG sudo astronaut
passwd astronaut
```
For this guide, we'll use `stardust123` as the user password.

#### Step 10: Install Bootloader
Install GRUB for UEFI:
```bash
pacman -S efibootmgr grub
grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id=ArchLinux
grub-mkconfig -o /boot/grub/grub.cfg
```

#### Step 11: Configure SSH
1. **Configure SSH**:
   - Open the SSH configuration file:
     ```bash
     sudo nano /etc/ssh/sshd_config
     ```
   - Make the following changes:
     - Change `PermitRootLogin` to `prohibit-password`.
     - Change `PasswordAuthentication` to `no`.
     - Add `PubkeyAuthentication yes`.
     - Add `AuthorizedKeysFile .ssh/authorized_keys`.
   - Save the file and restart the SSH service:
     ```bash
     sudo systemctl enable sshd
     sudo systemctl start sshd
     ```

2. **Set Up SSH Keys**:
   - Generate an SSH key pair on your client machine:
     ```bash
     ssh-keygen -t rsa -b 4096
     ```
   - Copy the public key to your Arch Linux server:
     ```bash
     ssh-copy-id astronaut@your_server_ip
     ```

#### Step 12: Exit Chroot and Reboot
Exit the chroot environment and reboot:
```bash
exit
umount -R /mnt
reboot
```

### Post-Reboot Configuration

#### Step 13: Verify SSH Access
After rebooting, try to SSH into your new Arch Linux system from another machine:
```bash
ssh astronaut@your_server_ip
```
Replace `your_server_ip` with the actual IP address of your Arch Linux system.

#### Step 14: Network Configuration
1. **Install NetworkManager**:
   ```bash
   sudo pacman -S networkmanager
   ```

2. **Enable NetworkManager**:
   ```bash
   sudo systemctl enable NetworkManager
   sudo systemctl start NetworkManager
   ```

3. **Configure DHCP for Ethernet**:
   - Ensure the interface `enp0s25` (or whatever your interface is named) is set to use DHCP:
     ```bash
     nmcli d
     nmcli con mod enp0s25 ipv4.method auto
     nmcli con up enp0s25
     ```

### Final Notes
- **Firewall**: Consider setting up a firewall using `ufw` or `firewalld`.
- **Regular Updates**: Regularly update your system using `sudo pacman -Syu`.
- **Backup**: Regularly back up important data.

By following these steps, you should have a secure and accessible Arch Linux system up and running quickly. You can now manage your system remotely via SSH, minimizing the need for direct interaction.

---

#### Step 1: Verify Boot Mode
Ensure your system is booting in UEFI mode:
```bash
ls /sys/firmware/efi/efivars
```
If this directory exists, you are in UEFI mode.

#### Step 2: Partition the Disk
Format and mount the partitions:
```bash
mkfs.fat -F32 /dev/sda1  # EFI partition
mkswap /dev/sda2         # Swap partition
mkfs.ext4 /dev/sda3      # Root partition

mount /dev/sda3 /mnt
mkdir /mnt/boot
mount /dev/sda1 /mnt/boot
swapon /dev/sda2
```

#### Step 3: Install the Base System
Install the base packages:
```bash
pacstrap /mnt base linux linux-firmware vim
```

#### Step 4: Generate `fstab`
Generate the `fstab` file:
```bash
genfstab -U /mnt >> /mnt/etc/fstab
```

#### Step 5: Chroot into the New System
Change root into the new system:
```bash
arch-chroot /mnt
```

#### Step 6: Set Locale and Timezone
1. **Set locale**:
   - Edit `/etc/locale.gen` to uncomment your locale (e.g., `en_US.UTF-8`):
     ```bash
     vim /etc/locale.gen
     ```
   - Generate the locale:
     ```bash
     locale-gen
     ```

2. **Set timezone**:
   ```bash
   ln -sf /usr/share/zoneinfo/America/New_York /etc/localtime
   hwclock --systohc
   ```

#### Step 7: Set Hostname and Hosts
1. **Set hostname**:
   ```bash
   echo "spaceship.galaxy.local" > /etc/hostname
   ```

2. **Edit `/etc/hosts`**:
   ```bash
   vim /etc/hosts
   ```
   Add the following lines:
   ```
   127.0.0.1	localhost
   ::1		localhost
   127.0.1.1	spaceship.galaxy.local	spaceship
   ```

#### Step 8: Set Root Password
Set a strong password for the root user:
```bash
passwd
```
For this guide, we'll use `stardust123` as the root password.

#### Step 9: Create a Regular User Account
Create a user account and add it to the sudo group:
```bash
useradd -m astronaut
usermod -aG sudo astronaut
passwd astronaut
```
For this guide, we'll use `stardust123` as the user password.

#### Step 10: Install Bootloader
Install GRUB for UEFI:
```bash
pacman -S efibootmgr grub
grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id=ArchLinux
grub-mkconfig -o /boot/grub/grub.cfg
```

#### Step 11: Exit Chroot and Reboot
Exit the chroot environment and reboot:
```bash
exit
umount -R /mnt
reboot
```

### Post-Installation Configuration

#### Step 12: Secure SSH
1. **Install SSH**:
   ```bash
   sudo pacman -S openssh
   ```

2. **Configure SSH**:
   - Open the SSH configuration file:
     ```bash
     sudo nano /etc/ssh/sshd_config
     ```
   - Make the following changes:
     - Change `PermitRootLogin` to `no`.
     - Change `PasswordAuthentication` to `no`.
     - Add `PubkeyAuthentication yes`.
     - Add `AuthorizedKeysFile .ssh/authorized_keys`.
   - Save the file and restart the SSH service:
     ```bash
     sudo systemctl enable sshd
     sudo systemctl start sshd
     ```

3. **Set Up SSH Keys**:
   - Generate an SSH key pair on your client machine:
     ```bash
     ssh-keygen -t rsa -b 4096
     ```
   - Copy the public key to your Arch Linux server:
     ```bash
     ssh-copy-id astronaut@your_server_ip
     ```

#### Step 13: Network Configuration
1. **Install NetworkManager**:
   ```bash
   sudo pacman -S networkmanager
   ```

2. **Enable NetworkManager**:
   ```bash
   sudo systemctl enable NetworkManager
   sudo systemctl start NetworkManager
   ```

3. **Configure DHCP for Ethernet**:
   - Ensure the interface `enp0s25` (or whatever your interface is named) is set to use DHCP:
     ```bash
     nmcli d
     nmcli con mod enp0s25 ipv4.method auto
     nmcli con up enp0s25
     ```

#### Step 14: Install a Minimal Desktop Environment (Optional)
If you want a minimal desktop environment, consider installing Xorg and a lightweight window manager like i3 or dwm.

1. **Install Xorg**:
   ```bash
   sudo pacman -S xorg-server xorg-xinit
   ```

2. **Install a Window Manager**:
   ```bash
   sudo pacman -S i3
   ```

3. **Configure Xinit**:
   - Create a `.xinitrc` file in your home directory:
     ```bash
     echo "exec i3" > ~/.xinitrc
     ```

4. **Start X**:
   ```bash
   startx
   ```

### Final Notes
- **Firewall**: Consider setting up a firewall using `ufw` or `firewalld`.
- **Regular Updates**: Regularly update your system using `sudo pacman -Syu`.
- **Backup**: Regularly back up important data.

This setup guide provides a secure, minimal, and opinionated configuration for Arch Linux with a fun space-themed scheme. Adjustments can be made based on your specific needs and preferences.

---

Sure, let's refactor that section to use UTC as the timezone. This is a common choice for servers and can simplify time management, especially in multi-timezone environments.

### Refactored Section for Setting Timezone to UTC

```bash
ln -sf /usr/share/zoneinfo/UTC /etc/localtime
hwclock --systohc
```

### Updated Step-by-Step Guide with UTC Timezone

#### Step 6: Set Locale and Timezone
1. **Set locale**:
   - Edit `/etc/locale.gen` to uncomment your locale (e.g., `en_US.UTF-8`):
     ```bash
     vim /etc/locale.gen
     ```
   - Generate the locale:
     ```bash
     locale-gen
     ```

2. **Set timezone to UTC**:
   ```bash
   ln -sf /usr/share/zoneinfo/UTC /etc/localtime
   hwclock --systohc
   ```

This change ensures that your system uses Coordinated Universal Time (UTC) as the timezone. This is particularly useful for servers and systems that need to interact with other systems across different timezones.