This time, I am talking about SharePoint Resource security...
Below command line reference is used to Secure resources in file system and registry entries
psconfig -cmd secureresources
This command Performs SharePoint Products and Technologies resource security enforcement on the server. For example, security is enforced on files, folders, and registry keys.
And also, ensures permissions/previleges to sharepoint accounts.
This command is helpful in order to make sure that all the sharepoint resources are secure & user accounts have correct access previleges.
Below is the excellent web link for Configuring SharePoint farm using psconfig.exe
http://blogs.msdn.com/yvan_duhamel/