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+Headless
+--------
+
+The pi is a strange mix, development board and pull pc in one. Some people use it as a pc, but not me.
+
+I use the pi because it is the same price as an Arduino, but much more powerful.
+
+As such i don't use the keyboard or display and that is called headless mode, logging in with ssh.
+
+ssh -p 2222 -l pi localhost
+
+the -p 2222 is only needed for the qemu version, not the real pi. 
+
+Authorized
+-----------
+
+Over ssh one can use many other tools, but the password soon gets to be a pain. 
+So the first thing i do is copy my public key over to the pi. This will allow login without password.
+
+scp -P 2222 .ssh/id_rsa.pub pi@localhost:.ssh/authorized_keys
+
+This assumes a fresh pi, otherwise you have to append your key to the authorized ones. Also if it complains about no 
+id_rsa.pub then you have to generate a key pair (public/private) using ssh-keygen (no password, otherwise you'll be typing that)
+
+Syncing 
+-------
+
+Off course I do all that to be able to actually work on my machine. On the Pi my keyboard doesn't even work and 
+i'd have to use emacs or nano instead of TextMate. So i need to get the files accross. 
+For this there is a million ways, but since i just go one way (mac to pi) i use rsync (over ssh).
+
+I set up a directory (home) in my pi directory (on the mac), that i copy to the home directory on the pi using:
+
+rsync -r -a -v -e "ssh -l pi -p 2222" ~/pi/home/ localhost:/home/pi
+
+The pi/home is on my laptop and the command transfers all files to /home/pi , the default directory of the pi user.
+
+Automatic sync
+--------------
+
+Transferring files is off course nice, but having to do it by hand after saving quickly becomes tedious.
+
+Fswatch to the rescue. It will watch the filesystem (fs) for changes. Install with brew install fswatch
+
+Then you can store the above rsync command in a shell script, say sync.sh. 
+Add afplay "/System/Library/Sounds/Morse.aiff" if you like to know it worked.
+
+Then just run fswatch ~/pi/home/ sync.sh
+
+And hear the ping each time you save.
+
+Conclusion
+----------
+
+So the total setup involves the qemu set up as described. To work i
+
+- start the terminal (iterm)
+- start the pi, with my alias "pi" *
+- log in to the pi in it's window
+- open textmate with the directory i work (within the home)
+- edit, save, wait for ping, alt-tab to pi window, run my whatever and repeat until it's time for tea
+
+* (i don't log into the prompt it gives in item so as not to accidentally quit the qemu session with ctr-c )
+
+
+