I came across a couple of Linux commands that I have not used before and wanted to share them in case anyone else find them useful. I used them to determin who was on a linux server as well as when the server last rebooted for troubleshooting a web server problem.
From the man page:
The pseudo user reboot logs in each time the system is rebooted. Thus
last reboot will show a log of all reboots since the log file was cre‐