I have a soldat dedicated server running on debian linux.
Everything works.
But I need to know if I should use some kind of program to make sure the server doesn't crash, and if it does to restart it.
It hasn't crashed yet and I havent had to restart it. Its been running nonstop for almost a day 1/2 now.

And how often and why does the soldat server crash?

http://server.selfkill.com restarts their servers via cronjob daily :)
the point is not that they crash afer a long time of running, but the use more and more resources and get more instable.

unstable*

Well, there are still some issues with map downloading but that's mostly in Windows. I dont think servers running on Linux crash that often.

http://enesce.com/index.php?page=servers restart their servers via cronjob hourly ;)
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http://archive.forums.soldat.pl/topic.php?topic_id=17226
^^ Click there, its a program that monitors your server and restarts it when it crashes. (For Linux)

lol hourly?
not too often? :O

client choose what hours they want to restart, its an optional thing.

ahh, good idea ;O