Example usage for assoc.
assoc .txtassoc command
View or change the file-type association for a filename extension.
Documented syntax
assoc [<.[ext]>[=[<filetype>]]]The linked Microsoft Learn article is the upstream authority. Availability may depend on Windows release, role, optional feature or interactive tool context.
Examples
Parameters, options and clauses
| Option / clause | Description |
|---|---|
.<extension> | Select a file extension to query or assign. |
=<fileType> | Set the file type associated with the extension. |
<.ext> | Microsoft documents this argument or subcommand; check the linked reference for its required format and context. |
/? | Display command help or the supported command-line usage. |
Review a command and its target before running it. Commands that alter files, services, accounts, disks, permissions or databases may be difficult to reverse. Test in a safe environment and keep backups.