Filename windows

Now, you have variables having current date and time in variables. You can use and create any file name as per your requirements like:. The complete windows batch script will look like below. To test this create a file test. Save the file and execute the script. In this tutorial, you have learned to create directories or filenames based on the current date time in the Windows system.

That last example works well apart from the quotation marks around Welcome Here! It is a very clean and precise code snippet for getting the current timestamp in a DOS Batch file. Thanks again! Initialise it as follows:. The solution above breaks if you change locale. What is wrong? I testing on Win Save my name, email, and website in this browser for the next time I comment. Facebook Twitter Instagram. TecAdmin Home Ubuntu Related Posts. Which Process is listening on a Port in Windows?

See Maximum Path Length Limitation for full details. There are two main categories of namespace conventions used in the Windows APIs, commonly referred to as NT namespaces and the Win32 namespaces. The NT namespace was designed to be the lowest level namespace on which other subsystems and namespaces could exist, including the Win32 subsystem and, by extension, the Win32 namespaces. Early versions of Windows also defined several predefined, or reserved, names for certain special devices such as communications serial and parallel ports and the default display console as part of what is now called the NT device namespace, and are still supported in current versions of Windows for backward compatibility.

The Win32 namespace prefixing and conventions are summarized in this section and the following section, with descriptions of how they are used. Note that these examples are intended for use with the Windows API functions and do not all necessarily work with Windows shell applications such as Windows Explorer. For this reason there is a wider range of possible paths than is usually available from Windows shell applications, and Windows applications that take advantage of this can be developed using these namespace conventions.

For more information about the normal maximum path limitation, see the previous section Maximum Path Length Limitation. This is how access to physical disks and volumes is accomplished directly, without going through the file system, if the API supports this type of access.

You can access many devices other than disks this way using the CreateFile and DefineDosDevice functions, for example. For example, if you want to open the system's serial communications port 1, you can use "COM1" in the call to the CreateFile function. This allows you to access those devices directly, bypassing the file system. This works because these device names are created by the system as these devices are enumerated, and some drivers will also create other aliases in the system.

Always check the reference topic for each API to be sure. To illustrate, it is useful to browse the Windows namespaces in the system object browser using the Windows Sysinternals WinObj tool.

The subfolder called "Global?? Named device objects reside in the NT namespace within the "Device" subdirectory. Here you may also find Serial0 and Serial1, the device objects representing the first two COM ports if present on your system.

A device object representing a volume would be something like "HarddiskVolume1", although the numeric suffix may vary. The name "DR0" under subdirectory "Harddisk0" is an example of the device object representing a disk, and so on.

To make these device objects accessible by Windows applications, the device drivers create a symbolic link symlink in the Win32 namespace, "Global?? Without a symlink, a specified device "Xxx" will not be available to any Windows application using Win32 namespace conventions as described previously. With the addition of multi-user support via Terminal Services and virtual machines, it has further become necessary to virtualize the system-wide root device within the Win32 namespace.

This prefix ensures that the path following it looks in the true root path of the system object manager and not a session-dependent path.

File System Functionality Comparison. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Is this page helpful? Please rate your experience Yes No. To learn more about how to change which program will open a file, read Change default programs in Windows In the search box on the taskbar, type file explorer , and in the search results, select File Explorer.

Open XML formats and file name extensions. File formats that are supported in Windows Media Player. File formats that are supported in Excel. File formats that are supported in PowerPoint. File formats that are supported in Project. Windows 10 More Need more help? Join the discussion. A subscription to help make the most of your time. For up to 6 people. Premium apps.