File extension problem under KDE

[Lost_scrib]

The string

text/Mathematica

should appear in the magic file as a description of a file type. Is it there?
If it is there, I'm quite lost


Edit:
Must be exactly that string.

[Xaleandr]

Hello,

yes, in magic there stands "text/Mathematica" as it should be. This is a problem.

I am not quite sure but I suspect the problem might be with installation of KDE on my laptop (upgrade SuSe 10.1->10.2) or with SuSe 10.2 in general.
KDE on my laptop is installed to /opt/kde3/..., but somewhy there is a clone @ /etc/opt/kde3/

Nevertheless, thank You very much for your help,

Best wishes,
Xaleandr

[Xaleandr]

Hello,

finally I found solution--hope this info might be useful for somebody else.

According to "strace file MyFile.nb", the problem was that content-based type recognition is using file
"/usr/share/misc/magic.mgc ",
which is a "compiled" version of "magic"[see "man file" for more details, "file -C magic" to compile magic -->magic.mgc ].
On our system "magic.mgc" was obsolete, which caused all problems.

Thus, if I write some crazy app which uses some nonstandard binary format, and want it to be correctly recognized on any machine, I have to add recompilation of "magic" in
Makefile/ " install : " (???)