Defining the System Administrator’s JobUnderstanding Superuser StatusBecoming Superuser (su)Exiting Superuser StatusLogging In as RootCommunicating with UsersDisplaying System-Specific Messages at Login (motd)Creating a Message of the DaySending a Message to an Individual UserTyping a Short Message to an Individual User (write)Sending a Message from a File to an Individual User (write)Sending a Message to All Users on a System or Network (wall, rwall)Sending a Message by E-MailStarting Up SystemsChoosing an Init StateThe /etc/inittab FileRun Control ScriptsThe /sbin/rc0 ScriptThe /sbin/rc1 ScriptThe /sbin/rc2 ScriptThe /sbin/rc3 ScriptThe /sbin/rc5 and /sbin/rc6 ScriptsThe /sbin/rcS ScriptFinding the Run Level for a SystemUsing OpenBoot PROM State, Run Level 0Using Single-User State, Run Level s and SUsing Administrative State, Run Level 1Using Multiuser State, Run Level 2Using Remote Resource-Sharing State, Run Level 3Using Alternative Multiuser State, Run Level 4Using Power-Down State, Run Level 5Using Reboot State, Run Level 6Changing Run LevelsUsing Platform-Specific Booting ProtocolsThe OpenBoot PROM and Interface (SPARC Platforms)Displaying the PROM Release for a SystemOpenBoot Configuration InformationCommands Used to View or Modify Configuration VariablesOpenBoot Firmware Security LevelsThe PC BIOS (IA Platforms)Boot SubsystemsBooting a SystemBooting in Multiuser StateBooting in Single-User StateBooting InteractivelyLooking at the Boot MessagesBooting After Adding New HardwareForcing a Crash Dump and Rebooting the SystemAdministering Crash DumpsBooting the System with the Kernel DebuggerBooting a System for Recovery Purposes (SPARC Platform)Booting a System for Recovery Purposes (IA Platform)Aborting a Booting ProcessShutting Down a SystemChoosing Which Shutdown Command to Useshutdowntelinit and inithaltrebootShutting Down a Multiuser SystemShutting Down a System: Alternative WaysShutting Down a System Without ConfirmationChanging the Shutdown Grace PeriodShutting Down and Rebooting a Multiuser SystemShutting Down a Single-User SystemShutting Down and Rebooting a Single-User SystemShutting Down a System in a HurryMonitoring ProcessesCommands for Monitoring ProcessesUsing the ps CommandWhat the ps Command ReportsUses for the ps ReportSignalling a ProcessKilling ProcessesUsing the /usr/proc/bin CommandsDisplaying and Controlling Information About ProcessesThe Priority Control Command (priocntl)Creating and Administering Resource Management PoolsDisplaying Basic Information About Process ClassesDisplaying the Global Priority of a ProcessDesignating a Process PriorityChanging the Class of a ProcessSetting Fair-Share ParametersSetting Fixed-Priority ParametersSetting the Priority of a Process (nice)Changing the Priority of a Running Process (renice)Finding or Signalling Processes (pgrep, pkill)Reviewing Essential Administration ToolsFrequently Used CommandsGetting Around in the File System (pwd, cd)Finding Where You Are in the File SystemChanging DirectoriesFinding Information About FilesDisplaying File Information (ls)Finding a File (find)Finding the Type of a File (file)Finding Information in Files (grep, egrep)Searching Files for Text StringsSearching Input for Lines with a Given PatternLooking at FilesViewing a File (more)Looking at the End of a File (tail)Looking at the Beginning of a File (head)Changing File Ownership or Permissions (chown, chmod, chgrp)Changing File OwnershipChanging File PermissionsChanging File Group Ownership (chgrp)Setting or Displaying the System EnvironmentCDE Environment VariablesTools in the Solaris Management ConsoleSMC Tools Available in SMC 2.1Starting SMC