Command Prompt on kenji.blog

Command to check Windows license status

Mon, 14 Apr 2025 00:41:45 +0900

[Windows] How to check license status (just one command)

Have you ever wondered if your Windows license is correctly activated?

A very convenient method is to check your license information with a single command. By following the steps below, you can easily check your current license status.

Command to check license status

You can display license information using a script tool built into Windows. Here is the command to use:

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slmgr /dli

When you run this command, partial license information will be displayed in a window.

How to run

Type “cmd” in the Start Menu, right-click on Command Prompt, and select “Run as administrator”.
Enter the following into the command prompt and press the Enter key:
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slmgr /dli
After waiting a few seconds, license information like the following will be displayed.

Main information displayed

Part of the product key
License type (Retail, OEM, etc.)
License status (Licensed, expired, not activated, etc.)

Want to know more detailed information?

There are also commands like the following:

slmgr /dlv: Display more detailed license information
slmgr /xpr: Display the license expiration date (e.g., whether it is permanent)

Summary

You can easily check the Windows license status with a single command.

Simple check: slmgr /dli
Detailed check: slmgr /dlv
Expiration date check: slmgr /xpr

If there is a problem with your license, updates or some functions may be restricted, so it is safe to check regularly.

Generate QR code with curl

Tue, 16 Apr 2024 00:42:27 +0900

Generate QR code with curl

Note: The method introduced below generates the QR code on the server side and returns it, so logs might be kept. Please be careful when converting confidential information such as personal information into a QR code.

Method 1

This is a method to generate a QR code in the command prompt. qrenco.de returns a text-based response.

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curl qrenco.de/kenji.blog

Output result

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█████████████████████████████
█████████████████████████████
████ ▄▄▄▄▄ █ ▄ ▄ █ ▄▄▄▄▄ ████
████ █ █ █ ▀▀▀██ █ █ ████
████ █▄▄▄█ █▀▀█▀▄█ █▄▄▄█ ████
████▄▄▄▄▄▄▄█▄▀ ▀ █▄▄▄▄▄▄▄████
████▄ █▀▄ ▄▀█▄▀ ▀██▄▀ ▄████
████▀▀▀█ ▄▄ ▄█▄█▀█▀▄██ ▀████
████▄▄▄██▄▄█ █▀█ ▄██▀▀█ █████
████ ▄▄▄▄▄ █▀█ ▀ ▄▀▄▄▄ ▀████
████ █ █ █▄▄ ▄▀▄▀▄ ██ ▀████
████ █▄▄▄█ █▀▀█ ▀▄▄▄ ▄▄██████
████▄▄▄▄▄▄▄█▄▄███▄▄█▄███▄████
█████████████████████████████
█████████████████████████████

Reference

qrenco.de

Method 2

api.qrserver.com returns an image.

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curl -o qr.png "https://api.qrserver.com/v1/create-qr-code/?size=150x150&data=HelloWorld"

Output result

Reference

QR Code Generator

Install PowerToys via Command Prompt

Sat, 30 Sep 2023 21:23:00 +0900

Install PowerToys via Command Prompt

Here is how to install PowerToys via Command Prompt.

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winget install Microsoft.PowerToys --source winget

Uninstall PowerToys via Command Prompt

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winget uninstall --name PowerToys

How to find the location of an executable in Windows

Mon, 03 Apr 2023 00:02:55 +0900

How to find the location of an executable in Windows

Sometimes when you execute a command by specifying an executable file, you want to know where that executable file is located. In such cases, you can find the location of the executable file using the following command.

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where <executable_file_name>

For example, if you want to know the location of Paint (mspaint.exe), you can do it as follows.

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where mspaint.exe

References

How do I find the location of an executable in Windows?

Fast Batch Deletion of Large Folders

Tue, 20 Sep 2022 16:04:02 +0900

Fast Batch Deletion of Large Folders

When deleting a large folder in Explorer, the deletion is executed after all the folder contents are fully searched, which is slow. By deleting with a command as shown below, the search and deletion are executed simultaneously, allowing you to delete large folders at high speed.

Move to the target folder level in the Command Prompt.
Execute DEL /F /Q /S folder_name > NUL.
Execute RMDIR /Q /S folder_name.