Windows Command Line - Hiding a file or virus

h --> hidden

r --> read only

s --> system attribute

+/- --> set/clear

attrib +h Test.txt
attrib -h Test.txt

attrib +r Test.txt
attrib -r Test.txt

attrib +s Test.txt
attrib -s Test.txt

attrib +h +r +s Test.txt #You can not find it anymore.
attrib -h -r -s Test.txt

Unhide any file :

attrib -s -h /s /d

相信未来 - 该面对的绝不逃避，该执著的永不怨悔，该舍弃的不再留念，该珍惜的好好把握。