Sry but i cant find anything helpfull
I run in the shell ./psclient(in the directory of the game)
and that is what i get:
 chmod: cannot access `psc': No such file or directory
 ./psclient: line 6: /home/spiros/Games/PlaneShift/psc: No such file or directory
 ./psclient: line 6: exec: /home/spiros/Games/PlaneShift/psc: cannot execute: No such file or directory

What Should I do?

I was an experienched windows user and I made my way out of windows mess.
Now I have Ubuntu but I feel (and I am) like 1000% newbie.
I made the bin executable (chmod +x file) BUT When
  spiros@C:~/Desktop$ sh PlaneShift_CBV0.3.019-x86.bin
 then
  PlaneShift_CBV0.3.019-x86.bin: 1: Syntax error: "(" unexpected
I really need help and information about the md5 command
I really think this a stupid solution but wine will solve my problem

Sry for my bad englih