Red Hat Enterprise Linux 5 Administration Unleashed

viRed Hat Enterprise Linux 5 Administration UnleashedSetting the Default Printer .......................................................74Administering Remotely ..........................................................74Adding Boot Parameters ..................................................................76GRUB ...................................................................................76ELILO...................................................................................77OS/400 .................................................................................77YABOOT ...............................................................................77z/IPL ....................................................................................78Summary ......................................................................................783 Operating System Updates 79Navigating Through the RHN Website ...............................................80Assigning Users for the RHN Website.................................................81Subscribing to RHN Channels ..........................................................82Performing Actions on Individual Systems from the RHN Website..........82Using System Groups on the RHN Website .........................................83Performing Actions on a System Group ......................................83Granting Users Access to Specific Systems...................................85Retrieving Software from RHN with YUM...........................................85What Is YUM? .......................................................................86Managing Software with YUM ..................................................87Summary ......................................................................................95Part II Operating System Core Concepts 974 Understanding Linux Concepts 99Learning the Desktop .....................................................................99Filesystem Hierarchy System...........................................................102Shell Basics..................................................................................103Navigating the Filesystem ......................................................104Finding Files ........................................................................107Finding Commands ..............................................................108Reading Text Files .................................................................109Starting Applications .............................................................109Becoming the Root User ................................................................110Manual Pages...............................................................................111Editing Text Files ..........................................................................112Vi Editor .............................................................................113Emacs Editor ........................................................................114File Permissions............................................................................116Initialization Scripts ......................................................................119Runlevels ....................................................................................120Changing the Default Runlevel ...............................................120