perhaps its server envy, but I am looking around on a linux server hard drive and saw a file called "bootlog" which holds entries like:
boot Sat May 5 02:50:51 2018
shutdown Thu May 31 22:59:24 2018
boot Thu May 31 23:00:39 2018
shutdown Tue Feb 12 23:40:23 2019
boot Tue Feb 12 23:41:45 2019
shutdown Tue Feb 12 23:53:43 2019
boot Tue Feb 12 23:55:05 2019
**UNCLEAN RESTART**
boot Sat Feb 23 14:40:09 2019
**UNCLEAN RESTART**
boot Mon Apr 22 19:14:31 2019
shutdown Fri Apr 26 08:32:39 2019
boot Fri Apr 26 08:34:01 2019
shutdown Thu May 2 10:00:09 2019
boot Thu May 2 10:00:58 2019
**UNCLEAN RESTART**
boot Thu May 16 09:27:43 2019
shutdown Sun Sep 15 22:59:01 2019
boot Sun Sep 15 23:00:22 2019
shutdown Sun Dec 1 09:03:10 2019
boot Sun Dec 1 09:03:57 2019
shutdown Tue Jul 7 00:25:31 2020
boot Tue Jul 7 00:26:21 2020
I thought that was pretty neat, and Im wondering how I too can get this functionality in Ubuntu. My OS is ubuntu mate 20.04, and the source of this bootlog thing is from some OS branded as UTWOS. I cant find much info outside of that, and the hardware that boots this disk is currently borked.