/ sys / devices / virtual / misc / [ HOME SHELL ] 
Name Size Permission Action
  autofs [ DIR ] drwxr-xr-x  
  btrfs-control [ DIR ] drwxr-xr-x  
  cpu_dma_latency [ DIR ] drwxr-xr-x  
  device-mapper [ DIR ] drwxr-xr-x  
  ecryptfs [ DIR ] drwxr-xr-x  
  fuse [ DIR ] drwxr-xr-x  
  hpet [ DIR ] drwxr-xr-x  
  hw_random [ DIR ] drwxr-xr-x  
  loop-control [ DIR ] drwxr-xr-x  
  mcelog [ DIR ] drwxr-xr-x  
  psaux [ DIR ] drwxr-xr-x  
  rfkill [ DIR ] drwxr-xr-x  
  snapshot [ DIR ] drwxr-xr-x  
  tun [ DIR ] drwxr-xr-x  
  udmabuf [ DIR ] drwxr-xr-x  
  uinput [ DIR ] drwxr-xr-x  
  vga_arbiter [ DIR ] drwxr-xr-x  

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Change Permission : device-mapper