I prefer to just download the data from the remote disks and then do the plots on my own local machine, which has all of my favorite tools for post-processing my data.
I understand that this can be inconvenient though. It is indeed possible to run a GUI on a remote supercomputer though, if you first use
ssh -X or
ssh -Y when signing into the remote machine (The difference between the
-Y options is the degree of trust you give the X11 clients). The reason I don't usually do this, is because viewing on my local computer, a GUI that's running on a remote machine, can sometimes be painfully slow, but this will depend on many factors (speeds of the internet connections involved, age of the hardware involved, etc.), so you might at least like to try it once. From a Windows computer, you can run an X11 server such as Xming.
Personally though, I watch my data as it's being calculated, using the
awk command; and if I want to make a publication-quality plot, I download the data to my local machine and do all post-processing and/or plotting offline. If you post the exact output from VASP and what precise numbers you want in your plot/visualization (with a question title like "how can I visualize the following data from the command line?"), I can try to give you an
awk command that would work for your case.