If used without parameters, ftype displays the file types that have open command strings =PerlScript ftype PerlScript= %1 %*. FTYPE FTYPE fileType FTYPE fileType= Key fileType: The type of file If you have multiple applications that use the same file extension, the ASSOC command. In computing, ftype is a command-line utility on Microsoft Windows which lists all Registry keys Registry. assoc; ftype; reg · regini · regsvr User environment. date · mode · path · set · setx · time · title · ver · whoami. File contents. comp · edit · edlin · fc · find.

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The “Open” action is defined by a string that includes the fully qualified path to the executable file that is to carry out the action and any parameters that must be passed ftyep the executable. The features and applications of Assoc and Ftype are discussed.

Gauthier 1 8 While changing program associations may be easier using the Windows Explorer Tools-Folder Options dialog no typing requiredthe command line method can also be useful, especially in batch files.

If a particular file type is specified, then the command string for that file type will be displayed. These entries are not for just Windows Explorer as has been suggested but are an addition source of user account file association overrides. More info from my registry: Citrix fornisce traduzione automatica per aumentare l’accesso per supportare contenuti; tuttavia, articoli automaticamente tradotte possono possono contenere degli errori.

I haven’t tried rebooting, however. Change the association to Wordpad.

However, this changed for Win XP and is no longer true. I got access denied when I tried assoc. How come the association is working, but assoc and ftype are not aware of it? What i do to change the default program for a given extension in a programatic way vs the standard and more simple way using explorer is modify this registry key.


What are the complication of doing this: My current account is a member of the admin group, but UAC is enabled. So you need to run the command multiple times if you want an application to open multiple file types. HKCR does not work the way you think it does. Unfortunately it is closed source.

The verb you use determines what Windows will do with it. Windows automatically put a deny ACL for the UserChoice key, so you need to find a way to remove that deny rule in order to get the write access. This is necessary because the full command for the open action requires the name of the file that is to be opened. To determine a file association, Windows looks first at the HKCU entries for a corresponding file extension. But assoc and ftype in the command line still return the following: This two step system facilitates not only one-to-one but many-to-one and one-to-many file association schemes.

But it does not seem to get used.

Solution As an example, the following procedure adds the file type. Super User works best with JavaScript enabled. As an example, to associate the extension. Citrix provides automatic sasoc to increase access to support content; however, automatically-translated articles may can contain errors. Microsoft have changed how this works from Windows 8 onward. Only if assc is not found do the HKLM entries come into play. However, it is possible to create your own verbs. Double clicking on the file will open the file with this application.


Explorer the Windows shell always gives preference to the application specified xssoc the vendor key which is specified under the extension’s default value. It can be quite a long list so it is best to redirect to a file or to pipe to the “more” command.

Published the application and when trying to configure the content redirection options, only the.

How to tell what program will open a particular file extension

I suppose this is what is showing up in ftype Python. XnView is a graphics browser, viewer and converter and that basically can be associated to open the majority of the image file types available.

Take some time sssoc browse the abovementioned keys with RegEdit to see more examples. Background The following scenario was created for demonstrating this issue: Oddly, if I create an association by right-clicking a file called test. Thankfully Christoph Kolbicz has reverse engineered the hashing algorithm and created a tool called SetUserFTA to set the file type association.

Using ASSOC and FTYPE to tell what program will open a particular file extension

I use the program subinacl, that you could download from here http: For example, the file ftypw “jpegfile” typically has both the extensions. As the file isn’t an executable file, the command line assumes that you want to open the file with the default application, as if you had double clicked it. Sign up using Facebook.