when to use make olddefconfig

[Sumit Kumar]

Hi,

I was going through this link : 
https://kernelnewbies.org/OutreachyfirstpatchSetup , and came across the 
make olddefconfig cmd. The explanation on the web page is very 
confusing. Can anyone please explain in simpler way when "make 
olddefconfig" cmd is intended to be used ? The webpage says this : If 
you need to make any changes to your configuration, run this command to 
silently update any new configuration values to their default.


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Thanks and Regards,

Sumit