vswhere:tldr:fe19e

The command "vswhere -products * -latest -prerelease -find **\VC\Auxiliary\Build\vcvarsall.bat" is used to locate the "vcvarsall.bat" script file, which is a part of Microsoft's Visual Studio development tools.

Here is a breakdown of the command:

• "vswhere" is a command-line utility provided by Microsoft that helps locate and query information about installed instances of Visual Studio.
• "-products " is used to search for all available products or instances of Visual Studio. The asterisk () is a wildcard symbol that matches any product.
• "-latest" is used to find the latest installed version of Visual Studio. This ensures that the command looks up the most recent version.
• "-prerelease" specifies that the search should include prerelease (or pre-release) versions of Visual Studio as well. These are the versions that are still under development or testing.
• "-find \VC\Auxiliary\Build\vcvarsall.bat" is the target of the search. It specifies the path or file name pattern to find. In this case, it looks for the "vcvarsall.bat" file located in the "VC\Auxiliary\Build" directory within the Visual Studio installation. The double asterisks () are used to indicate a recursive search through subdirectories.

In summary, the command allows you to find the "vcvarsall.bat" file in the latest installed version of Visual Studio, including both stable and prerelease versions. This file is commonly used to set up the command-line environment for building software with Visual C++.