( windows of operating system ) OR ( exists match ( regex "Linux CentOS (6|7)" ) of name of operating system ) OR ( ( name of operating system startswith"Linux Red Hat" ) AND ( exists file "/etc/redhat-release"whose ( exists line whose ( exists match ( regex "Red Hat Enterprise Linux (Client|Server|Workstation) release 6|7" ) ofit ) ofit ) ANDNOTexists file "/etc/vmware-release"whose ( exists line whose ( itcontains"VMware ESX" ) ofit ) ANDNOTexists file "/etc/enterprise-release"whose ( exists line whose ( itcontains"Enterprise Linux Enterprise Linux" ) ofit ) ) )
(windows of operating system) OR (exists match (regex "Linux CentOS (6|7)") of name of operating system) OR ((name of operating system startswith"Linux Red Hat") AND (exists file "/etc/redhat-release"whose (exists line whose (exists match (regex "Red Hat Enterprise Linux (Client|Server|Workstation) release 6|7") ofit) ofit) ANDNOTexists file "/etc/vmware-release"whose (exists line whose (itcontains"VMware ESX") ofit) ANDNOTexists file "/etc/enterprise-release"whose (exists line whose (itcontains"Enterprise Linux Enterprise Linux") ofit)))