====== Get Serial Number ======

  RasPlex-lounge:~ # cat /proc/cpuinfo
  processor       : 0
  model name      : ARMv6-compatible processor rev 7 (v6l)
  BogoMIPS        : 2.00
  Features        : swp half thumb fastmult vfp edsp java tls
  CPU implementer : 0x41
  CPU architecture: 7
  CPU variant     : 0x0
  CPU part        : 0xb76
  CPU revision    : 
  Hardware        : BCM2708
  Revision        : 000e
  Serial          : 0000000066b7c7d7
  
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   vcgencmd codec_enabled MPG2
   
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