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I renamed grubx64.efi into EFIBootootx64.efi. Now everything is ok. As I understand it, some models of Sony VAIO use only the bootx64.efi boot loader.
Set the scale special variable:
$ echo "scale=2; 100/3" | bc
33.33
One possible solution here would be using OSSEC.
It can be downloaded from here.
...This is just your window manager (I'm guessing Unity) that crashed. Unless is not something big, just restarting should bring things to normal.
Probably you can use the $USER variable? If you're new in scripting have a look at some basic guides like