diff --git a/Media/Convert BLURAY to H.265 HEVC with Handbrake Optimal Settings.url b/Media/Convert BLURAY to H.265 HEVC with Handbrake Optimal Settings.url
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+[InternetShortcut]
+URL=https://www.thewebernets.com/2023/02/20/best-optimal-settings-convert-bluray-to-h-265-hevc-with-handbrake-1080-on-mac-windows-linux/
diff --git a/Media/How a 0.2Hz Wave Took Down Two Countries Power Grids - YouTube.url b/Media/How a 0.2Hz Wave Took Down Two Countries Power Grids - YouTube.url
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+[InternetShortcut]
+URL=https://www.youtube.com/watch?v=DK8mw07DcPQ
diff --git a/ZFS/ZFS command line reference Cheat Sheet.pdf b/ZFS/ZFS command line reference Cheat Sheet.pdf
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diff --git a/ssh/Passwordless ssh connection from Windows.md b/ssh/Passwordless ssh connection from Windows.md
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+# Passwordless ssh connection from Windows
+
+## Create and Install SSH Key
+
+First of all, we need to create a new key in the Windows pc (where we start the connection) using:
+
+`ssh-keygen -t rsa`
+
+Don't change the default path or remember where you saved the key, it will be used for the next command. Press enter another two times to avoid using a passphrase (if you don't want it).
+
+After that, if you haven't change the default path, the key will be created into `{USERPROFILE}\.ssh\id_rsa.pub`.
+
+Now, you can usually use the command `ssh-copy-id` for installing the key on the remote host, but unfortunately this command is not available on Windows, so we have to install it using this command:
+
+`type $env:USERPROFILE\.ssh\id_rsa.pub | ssh {REMOTE_HOST} "cat >> .ssh/authorized_keys"`
+
+or if your key is not in the default path:
+
+type `{RSA_KEY_PATH} | ssh {REMOTE_HOST} "cat >> .ssh/authorized_keys"`
+and replace the `{RSA_KEY_PATH}` with your RSA path.
+
+Replace `{REMOTE_HOST}` with the remote host IP/Name (like `pi@192.168.0.1`), launch the command, insert the password if required, and the work is done!
+
+
+## Hosts
+
+### docker-01.home.ramberg.net
+
+`$env:USERPROFILE\.ssh\id_rsa.pub | ssh rcadmin@docker-01.home.ramberg.net "cat >> .ssh/authorized_keys"`
+
+### database.home.ramberg.net
+
+`$env:USERPROFILE\.ssh\id_rsa.pub | ssh rcadmin@database.home.ramberg.net "cat >> .ssh/authorized_keys"`
+
+
+## IMPORTANT!
+
+### SETTING UP `.ssh` FOLDER
+
+If the `~/.ssh` folder is not existing in your remote host, you need to configure them, this is usually done by the command `ssh-copy-id`, but we can not access to this power from Windows! You need to connect to the remote host in ssh and create the `.ssh` directory and the `authorized_keys` file for the first time:
+
+```
+ssh {REMOTE_HOST}
+Create the .ssh directory:
+mkdir ~/.ssh
+Set the right permissions:
+chmod 700 ~/.ssh
+Create the authorized_keys file:
+touch ~/.ssh/authorized_keys
+Set the right permissions:
+chmod 600 ~/.ssh/authorized_keys
+```
+
+### NOTE
+
+The `authorized_keys` is not a folder, if you try to create it using `mkdir`, the SSH connection passwordless will not work, and if you debug the ssh on the host, you will notice an error/log similar to:
+
+~/.ssh/authorized_keys is not a key file.
+
+### ADD YOUR SSH KEY ON YOUR AGENT
+
+Run those two lines on your Windows pc to add the created key on your cmd/powershell:
+
+```
+ssh-agent $SHELL
+ssh-add
+```