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net time

net time is a command used to synchronise times with other computers on a Windows network.

To just view the time on another networked computer

Viewing a remote computer's time

net time \\computername

To Sync the local workstation's time to it, without prompting:

Setting the time on this computer to the same as a remote computer

net time \\bigserver /set /y

Using TAR

See TAR Archiver