wol | Wake On LAN | TCP library

Here's a way you could do this :

Try this ...! Insert a Parse JSON action using your payload to generate the schema. There's a button there that says Generate from sample.

The next action after that should be another Parse JSON step with this as the schema ...

You shouldn't actually need to write any specific expression, the standard dynamic content should give you what you need.

If you use the Parse JSON action, it will make life a lot easier. I can't tell if you are or not but it looks little different to my example.

However, in the template (based on what I've put together) this is the expression that the dynamic content WYSIWYG editor generates ...

This problem is due to the column in question being a string. If you convert it to an int, that should solve it.

The OS is involved only to the extent that there's not a standardized way to enable WoL for all hardware. Therefore, you typically need a device driver for the specific hardware to be able to enable the hardware's capability. Loading the OS usually gives you such a device driver.

Running ethtool every startup should be fairly trivial, especially since (at last if memory serves) running it twice (or more) should be harmless, so you can add it to (for one example) your .bashrc. If you need to ensure it really only happens once when you start up, instead of every time you login, you can add an init script to do that. man init-d-script should get you going pretty easily.

You have to enable it because most BIOSes leave it disabled by default, so unless you enable it, it won't work.

As to why the disable it by default: less certain, but my guess is that it's simply because most people don't use it.

You can make a map of commands to parameters.

The error message is The working folder D:\Visual Studio Projekte\WOL is already in use by the workspace JLOEWNER;Juergen Loewner on computer JLOEWNER.

The variable D:\Visual Studio Projekte\WOL stands for the blocked folder, JLOEWNER for the workspace/machine name and Juergen for the users id on Azure DevOps Server(TFS2018).

We could run the tf.exe cmd to delete Remote Workspace.

Steps:

Run Developer Command Prompt with Administrator privileges from Visual Studio 2019 and login with your Azure DevOps credentials. If the Login dialog doesn’t show up, force it by executing:

When sending a wakeonlan packet, you need to make sure the target device can receive the packet.

At the moment, you are sending the packet to the IPv4 address of the device.

When your computer has to send a packet to an IPv4 address, it needs to know its MAC address. So it asks the network "Who has IPv4 192.168.2.32? Tell me your mac address". Since you TV is shutdown, it does not respond.

The real wake on lan packet will never be send, as it des not know the destination mac address.

The real question then becomes, why does it work directly after shutting down, and the reason for this is that your OS keeps a list of IPv4+mac address table, so it can quickly send the packet out. You can view this list with the command arp -av on Windows

Note how it shows "dynamic" when your program successfully wakes the TV, but shows "invalid" when it fails to wake the TV up.

One solution for this, is sending the packet to the broadcast IPv4 address, which every devices receives. This IPv4 address typically ends with .255 with typical consumer IPv4 ranges.

Long story short, ethtool is a means to display and adjust generic NIC/driver parameters (identification, the number of receive and transmit queues, receive and transmit offloads, you name it) in a userspace application. On the one side, there's kernel API which a NIC driver is connected to (in particular, by means of struct ethtool_ops). On the other side, there's an ioctl command named SIOCETHTOOL which a userspace application can use to send requests to the kernel side and get responses.

Sub-identifiers enumerating specific commands for SIOCETHTOOL exist, and they correspond to the methods of struct ethtool_ops. From the question of yours it follows that it's struct ethtool_ops that should be explained.

I suggest that you take a look at include/linux/ethtool.h. There's a comment section right before the definition of struct ethtool_ops. In particular: