The simplest way to check CentOS version is reading release information on /etc/centos-release:
$ cat /etc/centos-release CentOS Linux release 7.5.1804 (Core)
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The simplest way to check CentOS version is reading release information on /etc/centos-release:
$ cat /etc/centos-release CentOS Linux release 7.5.1804 (Core)