/ sys / class / input / [ HOME SHELL ] 
Name Size Permission Action
  event0 [ DIR ] drwxr-xr-x  
  event1 [ DIR ] drwxr-xr-x  
  event2 [ DIR ] drwxr-xr-x  
  event3 [ DIR ] drwxr-xr-x  
  event4 [ DIR ] drwxr-xr-x  
  input0 [ DIR ] drwxr-xr-x  
  input1 [ DIR ] drwxr-xr-x  
  input2 [ DIR ] drwxr-xr-x  
  input3 [ DIR ] drwxr-xr-x  
  input4 [ DIR ] drwxr-xr-x  
  mice [ DIR ] drwxr-xr-x  
  mouse0 [ DIR ] drwxr-xr-x  

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Change Permission : input2