Checking the last reboot date and time of your Linux system is a common administrative task. Fortunately, we can easily find this information using built-in commands like who and last.
Check Last Reboot Using the who Command
We can use the who command with the -b flag to quickly check the Linux last reboot date and time. Root privileges are not necessary to perform this check.
$ who -b system boot 2020-08-29 06:39
Check Previous System Reboots Using the last Command
If you want to check the date and time of all previous Linux system reboots, we can use the last reboot command. This command retrieves the reboot history information from the /var/log/wtmp file.
$ last reboot reboot system boot 4.15.0-117-gener Mon Sep 14 16:54 still running reboot system boot 4.15.0-117-gener Mon Sep 14 16:51 - 16:54 (00:02) reboot system boot 4.15.0-117-gener Mon Sep 14 16:49 - 16:51 (00:01) wtmp begins Mon Sep 7 04:31:42 2020
By utilising these simple commands, you can keep track of your system’s uptime and recent reboots effortlessly.
