Windows & Linux & Mac Uptime

Learn run time before last boot.

Windows:

systeminfo | find "System Boot Time:"

or

Task Manager -> Performance

Linux & Mac:

uptime

Note: System boot time is wrong on Windows 10.

Solution:

  1. Press Windows key + r
  2. Type services.msc
  3. Click Windows Time
  4. Alternate click and then click Properties
  5. Change Startup type to Automatic
  6. Click Start if the service isn’t started
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Cronjob for Linux and Mac

# Works for mac, linux (or any OS with a cron scheduler)
# To install into cron, on the console enter: crontab -e
# Then paste in the 2 lines at the bottom of this page, then save
# You can check the "/tmp/mycron.log" file on your system to verify its happening each 5 minutes

PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin
2,7,12,17,22,27,32,37,42,47,52,57 * * * * sleep 12 ; curl -s http://myurl.com/myscript.php >> /tmp/mycron.log 2>/dev/null

Daily reboot at 04:00

0 4 * * * /sbin/shutdown -r now

Tested on Raspberry Pi