Unsure how long your Mac has been running for before it's last reboot? Wanting to see a list of recent reboot dates for diagnostic purposes? There are a couple of useful Terminal commands that can help with this.
Uptime
Open Terminal: Finder > Applications > Utilities
In Terminal, type or paste the following…
uptime
(return)
The following information will then be displayed...
:: Current time; :: Amount of days and hours the Mac has been on since it was last rebooted; :: Number of users; :: Central Processing Unit (CPU) load averages.
-
Recent Reboots
Open Terminal: Finder > Applications > Utilities
In Terminal, type or paste the following…
last reboot
(return)
A list of dates will appear on screen showing each time the Mac has restarted.
The day, month, date and time of each reboot is displayed.