How to block access to a directory through htaccess, but not touch one file?

Question

htaccess

How to block access to a directory through htaccess, but not touch one file?
For example, to block access to all contents of the "abc" folder, but allow access to the "qqq" file, which is located in this folder?

Answer 1

Order Deny,Allow 
Deny from all 
Allow from ip

<Files qqq> 
Order Deny,Allow 
Allow from all
</Files>