[Freeciv-Dev] Help with cvs

[Thue <thue@xxxxxxx>]

I need a little help with cvs: What is the easiest way to revert to the 
official version after having changed something in your local copy.
I can get the following help text out of cvs:

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Usage: cvs update [-APdflRp] [-k kopt] [-r rev|-D date] [-j rev]
    [-I ign] [-W spec] [files...]
        -A      Reset any sticky tags/date/kopts.
        -P      Prune empty directories.
        -C      Overwrite locally modified files with clean repository copies.
[...]
---------------

But when I try to run "cvs update -C" I get

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bash-2.04$ cvs update -C
(Locally modified earth-80x50-v2.sav moved to .#earth-80x50-v2.sav.1.2)
cvs server: invalid option -- C
Usage: cvs server [-APdflRp] [-k kopt] [-r rev|-D date] [-j rev]
    [-I ign] [-W spec] [files...]
        -A      Reset any sticky tags/date/kopts.
        -P      Prune empty directories.
        -d      Build directories, like checkout does.
[...]
----------------

-Thue