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1、unix操作系統(tǒng)的小知識(shí)（LittleknowledgeofUNIXoperatingsystem）LittleknowledgeofUnixoperatingsystem(1)cataloguemanagementWecanuseMKDIR,rmdirandCDcommandstocreate,deletedirectories,andchangetheworkingdirectory,andthroughtheLScommandlisttodisplaydirectorycontent,inordertoachieveeffectivemanage
2、mentofdirectory.(1)thefunctionoftheMKDIRcommandistocreatedirectories,andcancreatemultipledirectoriesatthesametime,theformatisasfollows:MKDIR[-p]directory-name(s)TheparameterPintheestablishmentofrepresentativeofthespecifieddirectory,iftheparentdirectorydoesnotexist,itiscreated.[c
3、ases]MKDIRdir1dir2dir3,dir2,dir1//createdirectorydir3inthecurrentdirectoryMKDIRdir1/dir4//inthecurrentdirectoryunderthedir1subdirectoryofthedir4directorytocreateMKDIR-P/dir6/dir7inthecurrentdirectory,sincethereisnodir6directory,thenautomaticallycreatethedirectorydir6,Thenthesubd
4、irectorydir7//create(2)thermdircommandfunctionistodeletethedirectory,butitcanonlydeleteadirectory(orfiledoesnotcontainadirectory),sothecommandusedless,inthisarticlewillintroduceamorecommonlyusedtodeletedirectories.Theformatofthermdircommandisasfollows:Rmdirdirectory-name(s)(3)in
5、theprocessofhandlingdocumentsandotheroperations,itisnecessarytoworkindifferentdirectories,thentheCDcommandcanbeputintouse.TheCDcommandfunctionistochangethecurrentworkingdirectory,thecommandformatisasfollows:CD[directory-name]BehindtheCDdirectorypathcanbeabsolute,orrelativepath.I
6、ftheCDwithnofollowingthepathnameisbacktotheuser'shomedirectory.Ifyouarenotfamiliarwithsomeoftheconceptshere,pleaserefertotheintroductionandbasicsoftheUnixoperatingsystem,whichwillnotberepeatedhere.Herearesomeexamples:CDdir1//enterthecurrentdirectoryinthedir1directoryCD.//intothe
7、parentdirectory,whichchangetheworkingdirectorydirectorytotheparentdirectoryCD../zcl//backtotheparentdirectory,andthenentertheZCLsubdirectory(Note:thepathoftheabovethreeordersarerelative)CD/home/anray//theworkingdirectoryischangedintotherootdirectoryofthehomedirectoryundertheanra
8、ydirectory(Note:thispathisanabsolutepath)Inaddi
