docs(en): Add the guide on how to access the root SSH shell

content/en/docs/How To Guides/_index.md

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+---
+title: "How-to guides"
+weight: 2
+date: 2023-03-14
+description: >
+    These are the guides on how to perform common tasks.
+---

content/en/docs/How To Guides/root_ssh/_index.md

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+---
+title: "How to get root access via SSH"
+weight: 2
+date: 2023-03-14
+description: >
+    If you need to manually perform some tasks, you can get root access via SSH.
+categories: ["How-To Guides"]
+---
+
+To access your server's root shell you will have to generate your SSH key and add it to your server's authorized keys.
+
+## How to generate SSH key
+
+### Unix-like systems (PC)
+
+1. Open the terminal.
+2. Run the following command:
+    ```bash
+    ssh-keygen -t ed25519 -f ~/.ssh/id_ed25519
+    ```
+    You will be asked to enter a passphrase. You can leave it empty, but it is recommended to use a passphrase.
+    If you do not want to use a passphrase, press **Enter**.
+3. Print the public key to the terminal and copy it:
+    ```bash
+    cat ~/.ssh/id_ed25519.pub
+    ```
+4. Refer to the next section to add the key to your server.
+
+### Windows
+
+1. Open settings and under "Applications" click on "Manage additional components".
+2. Press "Add Component".
+3. Enter "OpenSSH client" in the search box and install it.
+4. Open the Command Prompt. You can do this by pressing **Win+R**, typing `cmd` and pressing **Enter**.
+5. Run the following command, replacing `user_name` with your Windows username:
+    ```ps1
+    ssh-keygen -t ed25519 -f C:\Users\user_name\.ssh\id_ed25519.pub
+    ```
+    You will be asked to enter a passphrase. You can leave it empty, but it is recommended to use a passphrase.
+    If you do not want to use a passphrase, press **Enter**.
+6. Print the public key to the terminal and copy it:
+    ```ps1
+    type C:\Users\user_name\.ssh\id_ed25519.pub
+    ```
+   Once again, replace `user_name` with your Windows username.
+7. Refer to the next section to add the key to your server.
+
+### Android (Termux)
+
+0. Install [Termux](https://termux.dev/en/). We recommend installing it from F-Droid.
+1. Open Termux.
+2. Run the following command:
+    ```bash
+    apt update -y && apt upgrade -y && apt install open-ssh -y &&
+    ssh-keygen -t ed25519 -f /data/data/com.termux/files/usr/etc/ssh/ssh_host_ed25519_key
+    ```
+    You will be asked to enter a passphrase. You can leave it empty, but it is recommended to use a passphrase.
+    If you do not want to use a passphrase, press **Enter**.
+3. Print the public key to the terminal and copy it:
+    ```bash
+    cat /data/data/com.termux/files/usr/etc/ssh/ssh_host_ed25519_key.pub
+    ```
+4. Refer to the next section to add the key to your server.
+
+## How to add the key to your server
+
+0. Open the SelfPrivacy app.
+1. Go to the "More" tab.
+2. Tap on "Superuser SSH keys".
+3. Tap on the "Create SSH key" button.
+4. Paste the public key you copied earlier.
+5. Tap on the "Create SSH key" button.
+6. Open the Jobs list
+7. Tap on the "Start" button.
+8. In a few minutes, you will be able to access your server's root shell via SSH.
+
+{{< imgproc more-superuser Fill "1001x808">}}
+{{< /imgproc >}}
+
+## How to access your server's root shell via SSH
+
+1. Open the terminal or Command Prompt.
+2. Run the following command, replacing `server_ip` with your server's domain:
+    ```bash
+    ssh root@server_domain
+    ```
+3. Enter the passphrase you entered when generating the SSH key, if you used one.
+
+Be careful when using the root shell. If you do not know what you are doing, you can break your server or leak your data.
+Responsibility for the consequences of your actions lies with you. Respect the privacy of other users.