How To Be Mastering Command Prompt #3 ASSOC

ASSOC is a command in cmd.exe (command prompt) to display or modifies file extention associations..

Here's the formula for use ASSOC:

ASSOC [.ext[=[filetype]]]

Description:

[.exe]   The file extention

Filetype Specifies the filetype to associate with the file extention

For example to use ASSOC:

1. Display the file extention with its association -->  assoc

Picture 1. ASSOC and press Enter

2. Display the specific extention -->  assoc .txt

Picture 2. Assoc .txt

3. Set the extention like .abc with association abc_file  assoc .abc=abc_file

Picture 3. Set the extention with the association

Note:
If the error show like “Access denied”, so you must run cmd in administrator mode. Click Start button --> All Programs -->  accessoriess --> right click command prompt and select run as administrator.