# Ubuntu

# Auto Update Setup

To configure **Ubuntu** to automatically update and upgrade all packages, including security and general updates, follow this **step-by-step documentation**:

---

## Objective

Automatically **update** (fetch the latest package information) and **upgrade** (install latest versions of installed packages) Ubuntu without manual intervention.

---

## Step-by-Step Guide

### 1\. **Install `unattended-upgrades`**

Ubuntu uses the `unattended-upgrades` package to perform automatic updates.

```bash
sudo apt update
sudo apt install unattended-upgrades
```

---

### 2\. **Enable `unattended-upgrades`**

Enable automatic updates system-wide:

```bash
sudo dpkg-reconfigure --priority=low unattended-upgrades
```

-   This command brings up a prompt. Choose **"Yes"** to enable automatic updates.
    

---

### 3\. **Configure the Update Settings**

Edit the configuration file to define what gets updated:

```bash
sudo nano /etc/apt/apt.conf.d/50unattended-upgrades
```

#### Recommended Settings in the file:

Make sure the following lines are **uncommented** (no `//` at the beginning):

```bash
"${distro_id}:${distro_codename}-security";
"${distro_id}:${distro_codename}-updates";
"${distro_id}:${distro_codename}-backports";
```

> 🔎 `${distro_id}` is usually `Ubuntu`, and `${distro_codename}` is like `focal`, `jammy`, etc.

Optional settings you may want to enable:

```bash
Unattended-Upgrade::Remove-Unused-Dependencies "true";
Unattended-Upgrade::Automatic-Reboot "true";
Unattended-Upgrade::Automatic-Reboot-Time "03:00";
```

---

### 4\. **Set Update Frequency**

Edit or create this file:

```bash
sudo nano /etc/apt/apt.conf.d/20auto-upgrades
```

Insert or update these lines:

```bash
APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Download-Upgradeable-Packages "1";
APT::Periodic::AutocleanInterval "7";
APT::Periodic::Unattended-Upgrade "1";
```

**Explanation**:

-   `"1"` = daily
    
-   Autoclean removes downloaded packages older than 7 days
    

---

### 5\. **Check Logs (Optional)**

After auto-updates run, logs are stored here:

```bash
/var/log/unattended-upgrades/
```

Use:

```bash
less /var/log/unattended-upgrades/unattended-upgrades.log
```

---

## Verification

To simulate what will be upgraded:

```bash
sudo unattended-upgrade --dry-run --debug
```

---

## Result

With these settings, your Ubuntu system will:

-   Check for updates daily
    
-   Automatically install all available upgrades (including security, updates, backports)
    
-   Reboot if needed (optional)
    

Let me know if you want a version tailored for **servers**, **desktops**, or **containers** (e.g. Docker).