WIXLIB

Brian W. Hugenbruch, CISSPz/VM Development Team, IBM: Endicott, NY, USAThe Basics of Using z/VM 2010 IBM Corporation

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DisclaimerThe information contained in this document has not been submitted to any formal IBM test and is distributed on an "ASIS" basis without any warranty either express or implied. The use of this information or the implementation of any ofthese techniques is a customer responsibility and depends on the customer's ability to evaluate and integrate them intothe operational environment. While each item may have been reviewed by IBM for accuracy in a specific situation, thereis no guarantee that the same or similar results will be obtained elsewhere. Customers attempting to adapt thesetechniques to their own environments do so at their own risk.In this document, any references made to an IBM licensed program are not intended to state or imply that only IBM'slicensed program may be used; any functionally equivalent program may be used instead.Any performance data contained in this document was determined in a controlled environment and, therefore, theresults which may be obtained in other operating environments may vary significantly. Users of this document shouldverify the applicable data for their specific environments.It is possible that this material may contain reference to, or information about, IBM products (machines and programs),programming, or services that are not announced in your country. Such references or information must not beconstrued to mean that IBM intends to announce such IBM products, programming or services in your country.3 2010 IBM Corporation

AgendaAn Overview of z/VMGeneral ConceptsUsing CMSCommandsCMS File SystemXEDITTailoring your environmentFor more information 4 2010 IBM Corporation

Overviewz/VM contains Two Basic PartsCP - Control ProgramCMS (or Guests LINUX, CP, z/OS, etc.)CMSCMSz/OSCPLINUXLINUXLINUXControl Program5 2010 IBM Corporation

CMS General ConceptsCMS: Conversational Monitor SystemAn interactive user interface that runs under the control of CPProvides an application programming and execution environmentCommandsEXECs (scripts) and pipelinesXeditCompilersUser programsMany tools availableProductivity AidsREXXVendor programs6 2010 IBM Corporation

CMS StrengthsUser-friendlyEnglish-like, extensible command languageEasy-to-use file systemCooperates well with CPCommands to exploit CP function and devicesExploits virtual machine conceptsCommands can be automatically passed to CP:If not found in CMS, or directly by issuing #CP commandHigh performanceSingle-user orientationShared CMS Nucleus, DCSS (Discontiguous Saved Segment)File system performance7 2010 IBM Corporation

EnvironmentsCMSIPL CMS or Begin, run Profile ExecLinemode or Fullscreen modeXEDIT EnvironmentXEDIT fn ft fm, run Profile XeditCMS Subset modeUnix-likeOpen Extensions (Posix Shell & Utilities) *Byte File System, Network File Systemz/OS-like or VSE-likeOS Simulation *DOS Simulation *8* not a full duplication of function 2010 IBM Corporation

Establishing a VM Sessionz/VM Logo ScreenOne at a time - 3270 emulation (PComm)LOGON . here - move a signon to another sessionLOGON . by . - signon using another passwordUsing CP to control the Virtual Machine#CP IPL CMS - restart your entire CMS sessionPROFILE EXEC exec runs to customize your session#CP LOGOFF - logon xxx - sign off/on9 2010 IBM Corporation

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Execution ModesStatus appears at the bottom right of screenCP Read(CP is waiting for a command)VM Read(CMS is waiting for a command)Running(Ready for cmds or working on some)More.(More info than can fit on the screen)50 seconds then beep then 10 secondsDetermine setting:Query TermPage without waiting: Term More 0 012Holding(Waiting for you to clear the screen )Not Accepted(Too many commands in buffer; waitfor executing command to complete) 2010 IBM Corporation

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CMS CommandsHandles a system of files: (create, modify, debug)Many language processors/compilers can run under CMSCommands are blank-delimitedInput accepted in ANY caseCMS will automatically uppercase and pass to command parser16 2010 IBM Corporation

CMS CommandsGeneral syntax:Command name [operand(s).] [ (options. [ ) ] ]Examples:copy Profile Exec A CLISTFILE ( DateRdrlistSET DOS ON command simulates a VSE (DOS) environment17 2010 IBM Corporation

CMS CommandsCommand Search Order -- when a command is entered, CMS hasto locate itSearch for an EXEC with the specified command nameEXECs in storageCommand name with Filetype EXEC on accessed disk or directory (A-Z)Search for translation or synonymSearch for a module with the specified command nameNucleus extension, transient area, nucleus resident, on accessed disk/directoryIf Command not found in CMS, it will be passed to CP for execution unlessSET IMPCP is OFF (Implied CP)18 2010 IBM Corporation

CMS CommandsImmediate CommandsCan be entered while another command is runningInterrupts the running command and executes immediately10 system immediate commands:HB, HI, HO, HT, HX, RT, RO, SO, TE, TSUsers can define their own immediate commandsIMMCMD Macro from an Assembler programIMMCMD Command from an EXECIMMCMD option on NUCXLOAD command19 2010 IBM Corporation

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CMS File SystemCMS files are unique and generally cannot be read or written byother operating systemsFiles are named using a file identifier (file ID)consisting of 3 fields:File name (FN)File type (FT)File mode (FM) or Directory name (dirname)file mode letter A-Z where minidisk or directory resides,established by ACCESS commandfile mode number 0-6 assigned when file is created or renamed (default 1), usedto identify or operate on a subset of files26 2010 IBM Corporation

CMS File SystemFiles can be stored in several ways:On Minidisks (fn ft fm)Standard file modes: A - user's disk, S - system disk, Y/S - installedprogramsIn an SFS (Shared File System) filespace: (GPLSRV2:HUGENBRU.REXX.)On the BFS (Byte File System) (/home/userid/.)hierarchical file structureIn NFS (Network File System)27 2010 IBM Corporation

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The Virtual MachineYou’re logged onto a VM, but where did it come from?What defines it? What can it do?The USER DIRECTORY is the answer for all of theseDefines all the virtual machines on a systemControls access to minidisksControls what commands a user can issue30 2010 IBM Corporation

Sample User DirectoryUSER IBMUSER IBMUSER 16M 16M GACCOUNT SYSTEMSMACH XAIPL CMSFocusCONSOLE 009 3215SPOOL 00C 2540 READER *SPOOL 00D 2540 PUNCH ASPOOL 00E 1403 ALINK MAINT 0190 0190 RR * CMS system diskLINK MAINT 019E 019E RR * Product code diskLINK 5767002P 29E 29E RRLINK 5767002P 505 305 RRLINK 5767002P 191 192 RRMDISK 191 3390 1535 001 510RES MR READ WRITE31MULTIPLE 2010 IBM Corporation

Sample User DirectoryUSER IBMUSER IBMUSER 16M 16M GACCOUNT SYSTEMSMACH XAIPL CMSCONSOLE 009 3215SPOOL 00C 2540 READER *SPOOL 00D 2540 PUNCH ASPOOL 00E 1403 ALINK MAINT 0190 0190 RR * CMS system diskLINK MAINT 019E 019E RR * Product code diskLINK 5767002P 29E 29E RRLINK 5767002P 505 305 RRLINK 5767002P 191 192 RRMDISK 191 3390 1535 001 510RES MR READ WRITE32FocusMULTIPLE 2010 IBM Corporation

Sample User DirectorySpool Devices:Reader, Printer, RPPControl ProgramPunchLINUXRPPPrinter 2010 IBM Corporation