Also, you are able to read the output and understand it. Now you can easily find the CentOS version and its kernel version. a, -all print all information, in the following order, except omit -p and -i if unknown: -s, -kernel-name print the kernel name -n, -nodename print the network node hostname -r, -kernel-release print the kernel release -v, -kernel-version print the kernel version -m, -machine print the machine hardware name -p, -processor print the processor type or 'unknown' -i, -hardware-platform print the hardware platform or 'unknown' -o, -operating-system print the operating system -help display this help and exit -version output version information and exit Conclusion

If you want to check which kernel is used on your server, this command will help you: uname -r The output of the command should be similar to: 3.10.0-693.17.1.el7.x86_64 The output displays following keys: - 3 – Kernel Version - 10 – Major Revision - 0 – Minor Revision - 17.1.el7 – Fix/Revision Detail uname command can also give the following information: Please keep in mind that you should always consider using the latest stable version of CentOS to have new features and cover security leaks. You can see that you're using CentOS release 7 (this is the major version) and 4 (this is the minor version), third part 1708 is added for the 7th version only and indicates that the source code of this release is based on dates from August 2017. Let me explain how to read the CentOS version numbers and what this number mean. NAME='CentOS Linux' VERSION='7 (Core)' ID='centos' ID_LIKE='rhel fedora' VERSION_ID='7' PRETTY_NAME='CentOS Linux 7 (Core)' ANSI_COLOR='0 31' CPE_NAME='cpe:/o:centos:centos:7' HOME_URL='' BUG_REPORT_URL='' CENTOS_MANTISBT_PROJECT='CentOS-7' CENTOS_MANTISBT_PROJECT_VERSION='7' REDHAT_SUPPORT_PRODUCT='centos' REDHAT_SUPPORT_PRODUCT_VERSION='7'

You should access the server via ssh and execute the following: cat /etc/centos-release Alternative commands to check the CentOS version: cat /etc/redhat-release and cat /etc/system-release and cat /etc/os-release The output should give you something similar to: CentOS Linux release (Core) or There are several commands that should be executed in your server's terminal. Releases - Versions - Numbers - Kernels How to get the CentOS version number

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