RH413 UNIT 1 TRACKING SECURITY UPDATES
Experiment 1: using yum updateinfo
1. Check to see if the plug-in for yum security is installed on the system
two。 View the overall information that the system can be upgraded
3. View only about security classes
4. Check out the security issues involved in those packages
5. Check which software packages in the system need to be updated
6. Check out some information about security class issues RHSA-2013:0820
7. Check out CVE-2013-0775 to solve the security problems of those software packages
