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Re: Terminal set to "unknown" in gnuplot 5.2.6

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From	Karl Ratzsch <mail.kfr@gmx.net>
Newsgroups	comp.graphics.apps.gnuplot
Subject	Re: Terminal set to "unknown" in gnuplot 5.2.6
Date	Thu, 21 Feb 2019 19:24:50 +0100
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Am 20.02.2019 um 14:30 schrieb jaga.physics94@gmail.com:
> Hi, 
> I have installed gnuplot 5.2.6 package from 'http://gnuplot.sourceforge.net/' and installed in my ubuntu 18.04. After opening it in my terminal, I found terminal is set to unknown. 

That result is tbe., because you very likely don't have installed
the numerous -dev packages of ubuntu that gnuplot needs to build all
the fancy interactive terminals. See e.g. here
https://stackoverflow.com/questions/29526044/installing-gnuplot-5-0-on-ubuntu/31819448#31819448

> I tried to remove the gnuplot by using the commang 'sudo apt remove gnuplot' and 'sudo apt-get purge --auto-remove gnuplot' and then tried to install gnuplot using the command 'sudo apt-get install gnuplot-qt', but event after all these my gnuplot is still showing terminal set to unknown.

These commands, as already mentioned in another post, did _not_
un/install the gnuplot you compiled by yourself, but a previous,
precompiled version that you had installed via ubuntu's package
manager (the executable should be in /usr/bin, you can run it from
there).

When looking for an executable, your shell inevitably first finds
the one you compiled yourself (it's located in /usr/local/bin or
such place), and doesn't look any further. I believe if you go back
into the source folder, and type "make uninstall", it gets removed.
Or you can delete it by hand.

So there are two possibilities: You either go back to ubuntu's stock
gnuplot package, or you re-compile from the sources as explained in
the link above.

Good luck!
   Karl

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Thread

Terminal set to "unknown" in gnuplot 5.2.6 jaga.physics94@gmail.com - 2019-02-20 05:30 -0800
  Re: Terminal set to "unknown" in gnuplot 5.2.6 Jörg Buchholz <bookwood4new@freenet.de> - 2019-02-21 07:22 +0100
    Re: Terminal set to "unknown" in gnuplot 5.2.6 jaga.physics94@gmail.com - 2019-02-21 01:02 -0800
      Re: Terminal set to "unknown" in gnuplot 5.2.6 Jörg Buchholz <bookwood4new@freenet.de> - 2019-02-21 11:36 +0100
        Re: Terminal set to "unknown" in gnuplot 5.2.6 jaga.physics94@gmail.com - 2019-02-21 02:50 -0800
          Re: Terminal set to "unknown" in gnuplot 5.2.6 Jörg Buchholz <bookwood4new@freenet.de> - 2019-02-21 14:16 +0100
  Re: Terminal set to "unknown" in gnuplot 5.2.6 Karl Ratzsch <mail.kfr@gmx.net> - 2019-02-21 19:24 +0100

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