Windows Subsystem for Linux - Debian 10.3

Cassandra, Hera, Vulcan, Hercules, Poseidon, Iapetus

Installation

Enable “Developer mode” in Settings –> Update & Security –> For developers
Press Windows key + R and run optionalfeatures.exe. Enable Windows Subsystem for Linux. Restart the computer.

Open Windows Power Shell as Administrator, then run the following line and reboot:

Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux

Open the Microsoft Store and search for “Linux”. Choose and get Debian, as per 2020-03-10 this is Debian 10 Buster.
Open Debian from the start menu and complete installation.
Upgrade all packages:
```
sudo apt update
sudo apt upgrade
```

Install packages:

sudo apt install vim
sudo apt install wget
sudo apt install zip
sudo apt install rsync

Create /run/sshd folder:
```
sudo mkdir /run/sshd
```

Create a shortcut to the executable on your desktop:

C:\Users\user\AppData\Local\Microsoft\WindowsApps\debian.exe

The root file system can be found at a path similar to:

C:\Users\bco\AppData\Local\Packages\TheDebianProject.DebianGNULinux_76v4gfsz19hv4\LocalState\rootfs

Add and icons to the shortcuts

SSH Server

Install packages:
```
sudo apt install openssh-server
```
Follow the SSH Client and Server guide. SSH into your host and open port 22 in the Windows Firewall.

Start SSH Server at Windows boot time

Open a bash command shell and allow <user> to run ssh as root, add the following line after %sudo:
```
sudo visudo
%sudo ALL=(ALL:ALL) ALL
<user> ALL=(root:root) NOPASSWD: /etc/init.d/ssh
```
Open Windows Task Scheduler and click Create Basic Task…
1. General
  - Name : Start Bash SSH Server
  - Description: Start the WSL SSH Server via a bash command
  - Run only when user is logged on
  - Run with highest privileges
2. Trigger
  - Begin the task: At log on [OR] On an event
  - (if you mount VeraCrypt volumes during boot it's better to use On an event and begin the task when the volumes are mounted)
  - Specific user: <user>
  - Enabled
3. Actions
  - Action: Start a program
  - Program/script: C:\Windows\System32\bash.exe
  - Add arguments (optional): -c “/usr/bin/sudo /etc/init.d/ssh start”
4. Conditions
  - Start the task only if the computer is on AC power
5. Settings
  - Uncheck Stop the task if it runs longer than:
6. Alternative Action when starting a non elevated script “startup”
  - Action: Start a program
  - Program/script: C:\Windows\System32\bash.exe
  - Add arguments (optional): -c “/home/user/startup”
  - Script “startup”:
```
#!/bin/bash
sudo /etc/init.d/ssh start
```

LAMP

Mounting encrypted drives

WSL can mount encrypted drives, but they must be mounted at the time wsl or bash runs the first time after boot.
If you do not execute any tasks when the host boots up, then just make sure your encrypted drives are mounted when you run wsl or bash.

If you do execute WSL tasks when the host boots up, replace the Task Scheduler entry for the trigger and make it rund after the Mount script has executed:

<QueryList>
  <Query Id="0" Path="Microsoft-Windows-TaskScheduler/Operational">
    <Select Path="Microsoft-Windows-TaskScheduler/Operational">*[EventData[@Name='TaskSuccessEvent'][Data[@Name='TaskName']='\Mount']]</Select>
  </Query>
</QueryList>

Remember to “Enable All Task History” under Actions tab. You might need to do this again after a Windows 10 major version upgrade.

Mounting external drives

mkdir /mnt/f
mount -t drvfs f: /mnt/f

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