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2012-11-12 06:52:29 +0100 marked best answer How do I Open the Web-Browser-based interface when I receive the error in the Description?

I seem to remember encountering a similar error. If I remember well the culprit was Ubuntu Firewall which kept al ports (with the possible exception of port 80) closed. Since I'm not very worried about security questions I justed turned off the firewall:

sudo ufw disable

and restart the system. (Again: if I remember well. It might have been 'ufw -disable', so consult the help system).

2012-11-11 06:16:18 +0100 asked a question How do I Open the Web-Browser-based interface when I receive the error in the Description?

I am running Ubuntu 12.10 i386 on Vostro 3500 dell laptop.

This is the error:

sage: notebook()
The notebook files are stored in: sage_notebook.sagenb
**************************************************
*                                                *
* Open your web browser to http://localhost:8084 *
*                                                *
**************************************************
Can't check status of PID 30037 from pidfile /home/brentonhorne/.sage/sage_notebook.sagenb/twistd.pid: Operation not permitted
---------------------------------------------------------------------------
error                                     Traceback (most recent call last)

/home/brentonhorne/sage-5.3/<ipython console> in <module>()

/home/brentonhorne/sage-5.3/devel/sagenb/sagenb/notebook/notebook_object.pyc in __call__(self, *args, **kwds)
    204     """
    205     def __call__(self, *args, **kwds):
--> 206         return self.notebook(*args, **kwds)
    207 
    208     notebook = run_notebook.notebook_twisted

/home/brentonhorne/sage-5.3/devel/sagenb/sagenb/notebook/run_notebook.pyc in notebook_twisted(self, directory, port, interface, address, port_tries, secure, reset, require_login, accounts, openid, server_pool, ulimit, timeout, open_viewer, sagetex_path, start_path, fork, quiet, subnets)
    434     if open_viewer:
    435         "Open viewer automatically isn't fully implemented.  You have to manually open your web browser to the above URL."
--> 436     return run(port)
    437 
    438 def get_admin_passwd():

/home/brentonhorne/sage-5.3/devel/sagenb/sagenb/notebook/run_notebook.pyc in run(port)
    419         os.chdir(cwd)
    420         if e == 256:
--> 421             raise socket.error
    422 
    423         return True

error: 
sage:

Any help of how to resolve this error will be greatly appreciated

2012-10-15 17:52:15 +0100 commented question How do I install f2py and all of its dependencies on Ubuntu 12.04 LTS?

I have tried typing, "%fortran" and it failed, what I want is to install f2py in such a way that Sage registers it. It doesn't come with the Sage package.

2012-10-15 07:18:33 +0100 asked a question How do I install f2py and all of its dependencies on Ubuntu 12.04 LTS?

Basically as per title, I've tried downloading the tarball and going from there but it always fails to register as installed. I have python 2.7 already but installing NumPy and SciPy the manual way so that f2py recognises it has failed me.