https://sourceforge.net/tracker/?func=detail&atid=117457&aid=
3420415&group_id=17457
Redhat Enterprise Linux 2.1WS redhat-linux 7.3 `cat /etc/redhat-release 2>/dev/null` =~ /WS.*2\.1/
Redhat Enterprise Linux 3.0AS redhat-linux 10.0 `cat /etc/redhat-release 2>/dev/null` =~ /(3\.0AS)|(2\.9\.5AS)|(AS\s+release\s+3)/i
Redhat Enterprise Linux "$2$1" redhat-linux $2 >= 4 ? $2+8.0 : 10.0 `cat /etc/redhat-release 2>/dev/null` =~ /(ES|AS|WS)\s+release\s+(\S+)/
-Redhat Enterprise Linux $2 redhat-linux $2+8.0 `cat /etc/redhat-release 2>/dev/null` =~ /Red.*Hat\s+Enterprise\s+Linux\s+(Server|Client)\s+release\s+(\d+)/i
+Redhat Enterprise Linux $2 redhat-linux $2+8.0 `cat /etc/redhat-release 2>/dev/null` =~ /Red.*Hat\s+Enterprise\s+Linux\s+(Server|Client|Workstation)\s+release\s+(\d+)/i
# Redhat enterprise desktop
Redhat Linux Desktop $1 redhat-linux 10.0 `cat /etc/redhat-release 2>/dev/null` =~ /Desktop\s+release\s+(\S+)/i || `cat /etc/redhat-release 2>/dev/null` =~ /ES\s+release\s+(\S+)/i