30-40x processes called "unar" eats up harddrive, memory and processor when TV is connected as external display. What is this and how do I get rid of it?

Question

What is this process and why does it eat up all my hard drive space, memory and processor every time external display is connected? If I have the display connected for long enough, it could easily eat up 60-70 gigs of my hard drive.

Answer 1

Somehow we need to identify what this "unar" process is.
Are you sure that this UnrarX is not in your login items ?? (the things to be automatically started at login)
Perhaps removing any login startup items would help in isolating the problem
As far as I find out, there's no easy way.
There is the source of simple program that will tell you the path to a process from it PID. That's certainly not very elegant but you can find it here.
Looking at your screen shot it would appear (just looking at the indentation) that the "unar" processes are not running as a sub-process of some other process like launchd, sh, Terminal, or something else.
If that's not the case then a important piece of information would be the parent process.
In the screenshot of a fragment of Activity Monitor below, bash is a sub process of login which is a sub process of Terminal. This structure only shows up if you sleected "all Processes, Hierarchically"
It would be useful to look at all the views of processes available in Activity Monitor.
By identifying in which views it shows up we can learn if it is a:
System process
one of My processes
other User Process
Windowed process
etc
This will help us in knowing where to look for "unar" and perhaps to figure out what it is, and why it keeps showing up