octave told "Value is required after -x" when I typed some commands.

[Gagiel]

Dear all,

I am using octave3.2 under Ubuntu 10.04 LTS, and I find myself stuck
in endless strange responses.

When i type "news" without the quotes, it says "Value is required
after -x", so does it with commands such as "help find" and the like.

I search through Google but could not find any related result. Also I
tried "apt-get --reinstall", though it was useless.

Any idea and suggestion? Thanks in advance.

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