assoc

Display or change associations between file extensions and file types. More information: https://learn.microsoft.com/windows-server/administration/windows-commands/assoc.

• List all associations between file extensions and file types:

assoc

• Display the associated file type for a specific extension:

assoc .txt

• Set the associated file type for a specific extension:

assoc .txt=txtfile

• View the output of assoc one screen at a time:

assoc | more