奥宝gensis脚本培训(英文版).docx

ProgramminginCshellThroughtheDemoandTraiCentre,Orbotechiscommittedtoofferingitscustomersthehighestqualityprofessionaltraining,whichprovidesthemostefficientandeconomicalsolutionstothechallengesofthePrintedCircuitBoardIndustry.SouthernChinaCommittedtoExcellence4B-4C,BlockC1ElectronicsScience&TechnologyBldg.No.2070ShennanZhongRoadShenzhen518031Tel:(86)7553287800Fax:(86)7553287801DemozTrainingCentreSouthernChinaOrtxitechTechnology(Shenzhen)CompanyLtd.No.107-113,Block5A,InternationalCommerceCenterNo.1001HonghuaRoad,FutianFreeTradeZoneGuangzhouOfficeRoom1006-7l10F,EastTowerTianheEntertainmentPlaza621TianheRoadGuangzhou510630Tel:(86)20-8757-4616Fax:(86)20-8757-4620Tel:(86)75535951303595137NorthernChinaCommittedtoExcellenceFax:(86)7553595135DemoZTrainingCentreNorthernChinaShanghaiOffice1F,278ZhuJiangRoad(N)KunshanDevelopmentZoneKunshan1F,278ZhuJiangRoad(N)KunshanDevelopmentZoneKunshanRoom243,XinMaoBuilding,2TaiZhongRoad(三)WaigaoqiaoFreeTradeZone,Shanghai200131Tel:(86)520-735-7745Fax:(86)520-735-8628Tel:(86)520-735-7745Fax:(86)520-735-8628Tel:(86)21-5048-0555*4202Fax:(86)21-5048-0555-4202Cshismorethanasimplecommandlineprocessor.Itisalsoaprogramminglanguage.Youcanwriteprograms(calledscripts)thatareexecutedbytheCShell.CONTENTSLCOmmandform琏音误!未定义书签。SingIeCOmmandlMUltiPleCommandS2COmmandGrOUPS3ConditionalCommandExecution4SUrnmary52IOredirectionandPiDeS£音误!未定义书签。OUtPUtRedireCtionlAPPendingC)UtPUt2RedireCtingErrorC)UtPUl3SePanltingStandardOUtPUtandErrOrOUtPUt4TheBUilt-inNoClObberVariable5RedireCtingInPUt6COrmeCtingCommands:PiPeS7RedirectingStandardErrorThroughPipes9SummarylO3fWenameexpansion错误!未定义书签。FiIeIameEXPanSiOnMetaCharaCterSlMatChingFiIenameStringCOmPonentS2MatChingWithCharaCterSCIaSSeS3DeDVrdFilenameS4EscapeMechanisms5Summary641variableslSettingVaVabIeSlUsingShellVariables2WordlistVariables3VaVableSUbStitUtiOn4ReIeaSiagVariabIeS5TeStingifVariablesaseSet6PalhnamCVariableS7COmmandSUbStitUliOn8QUotiOgVariableS9ShellPreDefinedVariableslOSummaryl15,scriptslShellScriptslShelISCriCtS-EXamDleS2TheFOrmatOfShenSCriDtS3COmmentSinSheIISCriCtS4TheEChoCOmmand5ReadingDatafromtheTelTnina16PassingParameterstoShellProcedures7UsingArgv8TheShiflCommandloTheConditionalSlatemenl11ACaUIiOnOnUndefInedVariabIeS14TheEXECommand155.13SUmmary166.ExpreSSiolIEVaIUatk)IllEXDreSSiOnevaluationArithmetiCC)PeratorS2ReIatiOnalOPeratOrS3LOgiCalODeraIorS4OPeratOrPreCedenCe5FileInquiryOperators7SUmmary97LuodsandSWitCheSlTheForeaChStatementlTheWhveStatement2TheSWitChStatement3TheBreak&ContinUeStatement6theGotoStatement7SUmmary81. COMMANDFORMS11SlNGLECOMMANDTHEFoRNTATFoRASlNGLECOMMAND%command_namearguments<RETURN>NoTES1. command_nameisasimplenameoranyvalidpathname.2. argumentsmaybeaflag,apathnameorsomeotherspecialstring.3. Spacesand/ortabsalwaysseparatearguments.4. A<RETURN>keystroketerminateseachcommandline.5. Youcanuse<RETURN>tocontinuealongcommandtothenextline.EXAMPLESToprintthefullpathnameofyourcurrentworkingdirectory:%pwdTotypethestring'Hello'onourterminal:%echoHelloTocreatetwonewdirectoriesinyourcurrentdirectory:%mkdirdir_ldir_2Tosearchthedirectoryhierarchystartingfromyourcurrentdirectoryforallthefilesnamed'test.dat,andtoprinttheirfullpathname:%find-nametest.dat-printNOTESIfyouliketogiveanargumentthathasablankinityoumustusequotesordoublequotes.EXAMPLES% prog 'New York' % prog "New Yorku % prog New Yorkoneargument=NewYorkoneargument=NewYorktwoarguments;First=New,Second=York1.2MULTIPLECOMMANDSTheCShellallowsustoconcatenateseveralcommandsonasingleinputline.Asemicolonisusedtoseparatetheindividualcommands.THEFoRMATFoRMULTIPLECOMMANDS%command；command_2;command_nEXAMPLESTomakeanewdirectoryandtomakethatdirectorythework_directory:%mkdirinformation;cdinformationGotoadirectoryandcompileaprogram,afterthatgototheroot:%cdsource;ccprogl.c;cd/NoTES TheC_Shellexecutescommand_1,Command_2,command_nsequentially. Eachcommandinthelistmayhavearguments. Usemultiplecommandswhenasetofcommandsformsalogicalgroup.1.3 COMMANDGROUPSTheCShellallowsustotreatagroupofcommandsasasinglecommandandtorunthecommandgroupinasub_shell,preservingtheparentshell'senvironment.THEFORMATFoRACOMMANDGROUP%(cmd_l;cmd_2;.;cmd_n)EXAMPLESToillustrateacommandgroupinaction,consider:%(cdc_progs;ccprogl.c)Thiscommand(1)changesdirectories;(2)runsacompile;andthen(3)automaticallyreturnstoourparentshellandouroriginaldirectory.1.4 CONDITIONALCOMMANDEXECUTIONManyUNIXcommandsreturnstatusinformation.THECONVENTIONONormal(successful)exit.non-OAcommanderroroccurred.EXAMPLESTochecktheerrorstatusofacommand,usetheCShellvariablestatus:%echo$status1Inthiscase,Sstatus=1meansthatthefileprogl.cdoesn'tmatchthepatterngarfield.NoTES ACShellvariableisreferencedbyprefixingadollarsign(