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I installed sage on ubuntu but nothing on the command line executes. The relevant portion in the long error message is: 

ImportError: libgfortran.so.3: cannot open shared object file: No such file or directory
Error importing ipy_profile_sage - perhaps you should run %upgrade?
WARNING: Loading of ipy_profile_sage failed.

I tried sudo apt-get install gfortran and sudo apt-get install libgfortran.so.3

But neither seem to work. I tried the Ubuntu Software Center GUI but it seems broken as it keeps showing the rotating wait prompt even though my net is working. I'm a bit stuck. Thanks.

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2 Answers 2

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I can confirm that it is package libgfortran3 that is needed. This has been working for me on Ubuntu Lucid (32bit):

apt-get install libgfortran3

cheers.

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See this Ubuntu package content search for packages containing libgfortran.so.3. I guess you need libgfortran3 but I don't know sage

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  • You spoiled it. Using fortran is SUPPOSED to be a punishment.
    – con-f-use
    Jun 10, 2011 at 18:47
  • I installed the libgfortran3-armel-cross from the website, reinstalled sage and it is showing the same error
    – yayu
    Jun 10, 2011 at 19:23
  • Most likely libgfortran3-armel-cross is the wrong package. Try libgfortran3 (you can use apt-get to install it)
    – Florian Diesch
    Jun 10, 2011 at 19:53
  • @con-f-use: why is FORTRAN punishment for you? or if you don't have have constructive answer better don't
    – zetah
    Oct 4, 2011 at 21:58

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