I don't know a whole lot about SSH but it is like DOS for linux systems. I mainly use it for restoring database if I ever have to. You can also do some linux operations just like the one I just did for compiling the jhead file
Here is the jhead file I used. Now I do not know much about this and I have a feeling it will not work but you can try it out.
unzip and copy the file jhead to your phoopost directory make sure after you FTP it right click and set it to executable then in the admin panel of photopost add the path to it, something like this