This tutorial will guide you on how to check Kernel Version & System Information on RedHat 8.1 Linux server.
Open terminal and execute uname command.
[root@worldwide ~]# uname -a
Linux worldwide.linux.net 4.18.0-147.el8.x86_64 #1 SMP Thu Sep 26 15:52:44 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux