On Fri, Dec 14, 2018 at 12:35 PM E. Madison Bray <erik.m.b...@gmail.com> wrote:
>
> On Fri, Dec 14, 2018 at 11:29 AM E. Madison Bray <erik.m.b...@gmail.com> 
> wrote:
> >
> > On Fri, Dec 14, 2018 at 4:04 AM Amir Zia <knowledge2...@hotmail.com> wrote:
> > >
> > >
> > >
> > > On Thursday, December 13, 2018 at 9:05:51 PM UTC-5, Amir Zia wrote:
> > >>
> > >>
> > >>
> > >> On Thursday, December 13, 2018 at 8:38:45 PM UTC-5, Samuel Lelievre 
> > >> wrote:
> > >>>
> > >>> Fri 2018-12-14 01:53 UTC+1, Amir Zia:
> > >>> >
> > >>> > Ubuntu 18.04
> > >>> > Sagemath 8.1-7
> > >>> > Texmacs 1.99.8
> > >>> > the plugin is downloaded from this page around 3 hours ago:
> > >>> > https://wiki.sagemath.org/TeXmacs?action=AttachFile&do=view&target=texmacs-sage.tar.gz
> > >>>
> > >>> Oh, that wiki page is very out of date (we should add a
> > >>> warning there about that). Get the up-to-date plugin from
> > >>>
> > >>>     https://github.com/texmacs/SageMath.tm
> > >>
> > >>
> > >>
> > >>
> > >>
> > >> I downloaded the bin & doc & progs then put them in a folder called sage 
> > >> and then copies the folder into $HOME/.TeXmacs/plugins/ ... I did this 
> > >> because git would give me errors...
> > >>
> > >> I still get the second error mentioned in the first post....
> > >>
> > >> Did I install it properly ?
> > >
> > >
> > >
> > >
> > > OK I found a solution.... Here is what I did to get it to work, Hopefully 
> > > others with the same problem can be helped:
> > >
> > > (1) Install sagemath.
> > >
> > > (2) Install Texmacs.
> > >
> > > (3) Find where sage is : "which sage"  usually it is at /usr/bin/sage
> > >
> > > (4) sudo ln -s /usr/bin/sage /usr/local/bin/
> > >
> > > (5) sudo -H nautilus
> > >
> > > (6) go to /usr/share/sagemath/bin/ and copy the content into 
> > > /usr/local/bin/
> >
> > Just for the record, in case anyone else finds this, that all sounds
> > like a bad idea to be honest.  Without being able to see your system
> > or know exactly what you did, it's hard to say what the "right"
> > solution would be, but there's no *good* reason to be copying files
> > around your filesystem like this without really knowing why.
> >
> > This sounds like more of a configuration issue, and not "some file
> > needs to be some specific place".
> >
> > (As an aside, you don't need to run nautilus just to copy files; you
> > can do this from the command-line shell with the `cp -R` command :)
> >
> > I don't know anything about texmacs so I regret that I can't offer a
> > "better" solution.  All I'm saying is please don't do this, as it's
> > just likely to break more things for you later.
>
> FWIW, I made an Ubuntu 18.04 container just to see what's going on
> with the sagemath 8.1-7 package on there.  I can't install Texmacs
> since I don't have an X server.  But it occurs to me from your
> original message that you were getting some error from some
> /usr/local/bin/sage, and I think that's your problem in the first
> place.
>
> The directory /usr/local/ is reserved for software that has been
> manually installed system-wide, without management from your system's
> package manager.  The Ubuntu package for sagemath 8.1 doesn't put
> anything there (nor should it).  The only way you would have some
> /usr/local/bin/sage is if you or someone else put it there yourself at
> some point.  And it's broken because it's looking for a
> /usr/local/bin/sage-env (the sage launcher script typically looks for
> this file relative to its own location) which doesn't exist.

I should read more carefully.  You already wrote:

"then I realized I should add sage to $PATH, So this is what I did:

which sage

Output: /usr/bin/sage

sudo ln -s /usr/bin/sage /usr/local/bin/"

So you made that symlink yourself, and that's where the problems
started.  /usr/bin should already be on your $PATH or else most of
your system wouldn't be working in the first place.  I don't think
this was your original problem.  I can't see clearly what the original
problem would have been, except that maybe you were using an outdated
version of the texmacs plugin, as Samuel pointed out.

So again, I stress, start by undoing anything you did involving moving
files into /usr/local because I have a feeling that you're only going
to have more problems down the line as a result of that....

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