You need to use who command, to print who is logged on. It also displays the time of last system boot. Use last command to display system reboot and shutdown date and time.
$ who –b
system boot Apr 30 15:08
Use last command to display listing of last logged in users and system last reboot time and date:
$ last reboot | less
Or, better try:
$ last reboot | head -1
reboot system boot 188.8.131.52 Sun Apr 30 15:08 - 16:22 (01:13)
The last command searches back through the file /var/log/wtmp and displays a list of all users logged in (and out) since that file was created. The pseudo user reboot logs in each time the system is rebooted. Thus last reboot command will show a log of all reboots since the log file was created.
Finding systems last shutdown date and time
To display last shutdown date and time use the following command:
$ last -x|grep shutdown | head -1
shutdown system down 184.108.40.206 Sun Apr 30 13:31 - 15:08 (01:37)
- -x: Display the system shutdown entries and run level changes.
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