# yum list installed zabbix*
zabbix.x86_64                              2.4.4-1.el6                 @zabbix  
zabbix-agent.x86_64                        2.4.4-1.el6                 @zabbix  
zabbix-release.noarch                      2.4-1.el6                   installed
zabbix-server.x86_64                       2.4.4-1.el6                 @zabbix  
zabbix-server-mysql.x86_64                 2.4.4-1.el6                 @zabbix  
zabbix-web.noarch                          2.4.4-1.el6                 @zabbix  
zabbix-web-mysql.noarch                    2.4.4-1.el6                 @zabbix