How to disable/enable all products in commerce?
It will take just a few steps to create a view for your commerce product
fields values manipulation:  


add a new View:  


"show group" set to Commerce Product "of type" - type of
     you commerce product, you want to change fields values;  
"display format" set to "Table";  
press "Continue &amp; Edit";  

In "fields"  group add "Bulk operations:Commerce Product" field:  


set checked "Modify entity values " in "Bulk operations" group;  
press "Apply" button;  



That are the main settings for your operation view. Just add fields and filters whatever you want.
Save your view and use it for change field values using bulk operations.