Commands of the day

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First how to check if somone is loged in to a remote computer in your domain

wmic /node:<computer name> computersystem get username

To disable the network card or enable it

netsh interface set interface "local area connection" disabled
netsh interface set interface "local area connection" enable

To add a user admin with the password of password to the admins group

net user admin password /add
net localgroup administrators admin /add

To start remote desktop connection

mstsc