Query logs to determine dates/times Mac OS X has been rebooted

I need to find out how often a user has been rebooting or shutting down her Mac laptop.

How can I query the Mac logs to determine the dates and times when a Mac OS X computer has been rebooted or shut down?
IT GuyNetwork EngineerAsked:
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ozoCommented:
last reboot
last shutdown

see `man last`
1

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