'Getdate00' is a little program to interactively set the system clock by using
the keyboard cursor keys to set the local date and time. The program display
looks like this:

   *******  Set Local Date/Time  ********
   **                                  **
   **  Edit ............ Cursor Keys   **
   **  Accept edited value ... ENTER   **
   **  Quit without changing ... ESC   **
   **                                  **
   ****  Mon, 15Mar2004, 07am:49:38  ****

where the candidate date/time on the bottom line updates every second to keep
pace with the system's UTC based system clock.

'Getdate00' was designed specifically to be run from a Linux startup script,
i.e. '/etc/rc.d/rc.S', to deal with a faulty CMOS clock or related hardware
problem. While running BIOS setup before each boot is probably the best way
to work around such a problem, running 'getdate00' in the startup script is
a reasonable fallback, especially on systems where it's tricky to get into
BIOS setup.

On systems such as on the author's Slackware 8.1.01 installation where the
CMOS clock is maintained in local time but the lowlevel kernel startup code
assumes that the CMOS clock is GMT-based, system time is _always_ skewed by
the amount of the GMT-localtime offset when the startup scripts are run.
'Getdate00' can be run with the command line option "-UTC_KLUDGE" in these
cases to make it aware of the _known_ error so that it can provide a better
starting value for the local date and time.