/A Displays the output using standard ASCII characters, rather than extended ASCII characters
that have a graphical appearance.
One of the best reasons to use the Tree utility is to explore your drive looking for places to clean
out old information. This utility can also help you locate hidden directories and even provide a certain
level of virus detection because most virus writers are counting on you to use Windows utilities
to explore the hard drive. The fact that you can run this utility from the recovery console means
that you can even use it to explore the drive for rootkits??”a particularly nasty form of virus that
actually hides itself from view when Windows is operating.
WARNING Rootkits are particularly dangerous viruses because you don??™t even know you have
one. They hide by using the operating system to trick you into not seeing the folders that store the
executables. The rootkit writer doesn??™t want you to know the rootkit is in place, so don??™t expect
a rootkit to do anything odd or strange. In fact, unlike common viruses, rootkits often go out of
their way not to use your system to propagate because that action would expose them.
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