SAS provides a utility
with which you can verify the integrity of your SAS Software Depot.
The SAS Software Depot Checker Utility scans your depot and identifies
any missing files. For each file that it finds, the depot checker
attempts to validate its size, checksum, and date-and-time stamp.
The depot checker attempts
to fix any problems that it encounters and lists the results of its
various validation tests. You have the option of printing the results,
saving them to a file, or viewing them in a web browser.