Hi,
I like to open a simple discussion.

The user has data in /data directory.What files can i delete as system admin in housekeeping process from /data?
I can delete core files and what else?
The user responsability is to keep enough space on /data and only if necessary to asak for more space.right?

You can delete whatever files you want if you do it as root. Your user might not be very pleased though!

The best way to stop users hogging space on a server is to set quotas.

1 members found this post helpful.

Just delete anything from /data that you or your users don't want. Simples

You tell us. We have no idea what's on that /data directory, or if it's important or not. And we don't know about your company policies in regards to system usage, what has to be done to request more, etc.

Bottom line: as an administrator, it is *YOUR* responsibility to keep the system(s) up and available for the user. That involves YOU knowing what the users need, monitoring things, and determining what the best path is. You can't generalize and say "I can ALWAYS delete files of xxx type...", without knowing WHY those files are there to start with. And the only way you know that is to talk with the users.

1 members found this post helpful.

This really isn't a computer question. It's a management/supervisory question.

I would suggest that the matter be brought to the supervisor's attention and the staffer be given a deadline to free up X amount of space (or prove that the files are needed) or face the possibility that files will be arbitrarily deleted.

Then follow up on hazel's suggestion to put quotas in place.

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Speaking strictly technically? You can delete all of /data whenever you want to.

the user responsability is to handle its own data and it is not sys admin responsibility.

You really aren't making yourself very clear - but I think you just answered your own question, no?
If not, clarify. Explain. Elaborate.

edit:
Oh, I see OP marked this SOLVED already - maybe disregard my post, maybe not.