Check out several commands for Linux OS kernel and version
Method 1
[root@localhost ~]# cat /etc/os-release NAME="openEuler" VERSION="23.03" ID="openEuler" VERSION_ID="23.03" PRETTY_NAME="openEuler 23.03" ANSI_COLOR="0;31"
Method 2
[root@localhost ~]# cat /proc/version Linux version 6.1.19-7.0.0.17.oe2303.x86_64 (root@-ci) (gcc_old (GCC) 10.3.1, GNU ld (GNU Binutils) 2.37) #1 SMP PREEMPT_DYNAMIC Tue Mar 28 00:01:02 CST 2023
Method 3
[root@localhost ~]# uname -a Linux 6.1.19-7.0.0.17.oe2303.x86_64 #1 SMP PREEMPT_DYNAMIC Tue Mar 28 00:01:02 CST 2023 x86_64 x86_64 x86_64 GNU/Linux [root@localhost ~]#
Method 4
#The system needs to have package support, if not, it needs to be installed online, as shown below[root@ss /]# lsb_release -a bash: lsb_release: command not found... Install package 'redhat-lsb-core' to provide command 'lsb_release'? [N/y] y * Waiting in queue... * Loading list of packages.... The following packages have to be installed: esmtp-1.2-15.el8.x86_64 User configurable send-only Mail Transfer Agent libesmtp-1.0.6-18.el8.x86_64 SMTP client library liblockfile-1.14-1.el8.x86_64 This implements a number of functions found in -lmail on SysV systems m4-1.4.18-7.el8.x86_64 The GNU macro processor mailx-12.5-29.el8.x86_64 Enhanced implementation of the mailx command ncurses-compat-libs-6.1-9.20180224.el8.x86_64 Ncurses compatibility libraries patch-2.7.6-11.el8.x86_64 Utility for modifying/upgrading files redhat-lsb-core-4.1-47.el8.x86_64 LSB Core module support redhat-lsb-submod-security-4.1-47.el8.x86_64 LSB Security submodule support spax-1.5.3-13.el8.x86_64 Portable archive exchange Proceed with changes? [N/y] y * Waiting in queue... * Waiting for authentication... * Waiting in queue... * Downloading packages... * Requesting data... * Testing changes... * Installing packages... LSB Version: :core-4.1-amd64:core-4.1-noarch Distributor ID: CentOS Description: CentOS Linux release 8.4.2105 Release: 8.4.2105 Codename: n/a [root@ss /]# lsb_release -a LSB Version: :core-4.1-amd64:core-4.1-noarch Distributor ID: CentOS Description: CentOS Linux release 8.4.2105 Release: 8.4.2105 Codename: n/a
Summarize
The above is personal experience. I hope you can give you a reference and I hope you can support me more.