How to install terminal postscript in Ubuntu 14.04?
 

This is my question. Thanks, - Alex

What is a terminal postscript? And what other kinds of postcripts exist?

Or do you mean how do you install postscript with terminal?

Thank you. ghostscript is already there. What I need is terminal postscript. I know very little about the terminals but I read on the web that terminal postscript supports command line scripting language to reproduce mathematical symbols in gnuplot, like the signs of integral, etc.

OK, I am closing the thread. I found out that terminal postscript is activated apparently by a set command in gnuplot, not apt-get install command in Ubuntu. They say the language is very complicated, I printed it out and I don't see how it can be used to write integrals. Thanks, - Alex

correct

Just one more thing.

I've been looking for a way to use Greek letters and math symbols in gnuplot. This is why I tried to do terminals. If you read their manual and some other websites it is the only way. In fact there is a simple-simple way to use such symbols in gnuplot. Go to this website, for instance, and there are many others, similar, and copy the symbol you need to the clipboard, then paste it into .gnu file, that's it. Example:

Nothing can be simpler.

Thanks.