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1、QNX®Neutrino®RTOSUser’sGuideForQNXNeutrino6.5.0©2012,QNXSoftwareSystemsLimited©20042012,QNXSoftwareSystemsLimited.Allrightsreserved.QNXSoftwareSystemsLimited1001FarrarRoadKanata,OntarioCanadaK2K0B3Voice:+1613591-0931Fax:+1613591-3579Email:info@qnx.comWeb:http://www.qnx
2、.com/Electroniceditionpublished2012QNX,Momentics,Neutrino,Aviage,Photon,PhotonmicroGUI,andFoundry27aretrademarksofQNXSoftwareSystemsLimited,whichareregisteredtrademarksand/orusedincertainjurisdictions.Allothertrademarksbelongtotheirrespectiveowners.ContentsAboutThisGui
3、dexviiWhatyoullfindinthisguidexixTypographicalconventionsxxiNotetoWindowsusersxxiiTechnicalsupportxxii1GettingtoKnowtheOS1HowQNXNeutrinocomparestootheroperatingsystems3UNIX3MicrosoftWindows4Limitations4HowNeutrinoisunique5Resourcemanagers72LoggingIn,LoggingOut,andShutti
4、ngDown9rootornon-root?11Loggingin11Photonmode11Textmode11Onceyouveloggedin12Loggingout12Photonmode12Textmode13Shuttingdownandrebooting133ManagingUserAccounts15Whatdoesauseraccountdo?17UseraccountsvsuserIDs:login,lookup,andpermissions18Whathappenswhenyoulogin?18Accountd
5、atabase19/etc/passwd20/etc/group20/etc/shadow21June14,2012Contentsiii©2012,QNXSoftwareSystemsLimited/etc/.pwlock21Managingyourownaccount22Changingyourpassword22Forgotyourpassword?22Managingotheraccounts23Addingusers24Removingaccounts25Defininggroups26Troubleshooting274U
6、singtheCommandLine29CommandlineorGUI?31Processingacommand31Character-devicedrivers31Inputmodes32Terminalsupport32Telnet32Thekeyboardataglance32Physicalandvirtualconsoles33Shell34Editingthecommandline35Commandandfilenamecompletion36Reservedwords37Enteringmultiplecommands
7、37Aliases37Substitutions38Redirectinginputandoutput40Pipes41Quotingspecialcharacters41History:recallingcommands42Shellscripts43Utilities43Understandingcommandsyntax44Displayingonlineusagemessages45Executingcommandsonanothernodeortty45Priorities45Basiccommands46Internat
8、ionalkeyboards46NeutrinoforMS-DOSusers47DOScommandsandtheirNeutrinoequivalents47MS-DOSlocalcommand-interpretervariabl
