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1、常用的unix命令,经典（CommonlyusedUNIXcommands,classic）CommoncommandsinUNIXsystemCommoncommandformatofUNIXsystem:Command[flags][argument1][argument2]...Whereflagsstartswith-andmultipleflagscanbelinkedtogether,suchasLS-l-aandLS-la.Accordingtothecommand,theparametersaredividedintooptionalornecessary;allcomm
2、andsacceptinputandoutputfromstandardinputTheresultisshowninstandardoutput,andtheerrorinformationisdisplayedonstandarderroroutputdevice.YoucanusetheredirectionfunctionRedirectionofthesedevices.Thecommandreturnsa0valueafterthenormalexecutionofthecommand.Ifthecommandisnotcomplete,theerrorisreturnedN
3、onzerovalue(availablevariable$inshell)view.ThisreturnvaluecanbeusedascontrollogicinshellscriptApartof.Note:differentUNIXversionsofflagsmaybedifferent.1.Commandsrelatedtotheuser1.1login(inLINUXRedhat,thecommandfunctionisdifferentfromthatofSolaris/BSD,andloginwillquitthecurrenttask)Login:Password:R
4、elateddocuments:Inthefollowingfiles,yousetthenecessarypaths,terminaltypes,othervariables,orspecialprogramsfortheshellruntime$HOME/.profile(Bourneshell,SH,bash)$HOME/.cshrc(CSH,tcsh)$HOME/.tcshrc(tcsh)Theshellofeachuserislistedinthe/etc/passwdfile/etc/csh.cshrc/etc/csh.login/etc/profile(Bourneshel
5、l,bash)/etc/login(Bourneshell,bash)Csh:/etc/csh.cshrcand$HOME/.cshrcwillbereadeverytimetheyexecute,And/etc/csh.loginand$HOME/.loginonlyhavetoregistershelltoexecuteAftermodifyingthecorrespondingfile,usesource.Cshrctomaketherelevantmodification,ifyoumodifythepathYoualsoneedtouserehashtorefreshtheex
6、ecutablehashtable.Tcsh:$HOME/.tcshrc,therearenofilestoread.CshrcSh:/etc/profileand$HOME/.profileregistershellBash:/etc/profileand$HOME/.bash_profileregistershellread.bashrcinteractivenonregisteredshellonlyread.Manuallyexecuterelevantdocumentsundersh/bash:/etc/profileRelatedfileexecutionsequenceSh
7、:/etc/profile->$HOME/.profileCsh/tcsh:/etc/csh.cshrc->/etc/csh.login->$HOME/.cshrc->$HOME/.loginVariablesettings:Sh/bash:TERM=vt100;exportTERMOR:exportTERM=vt100(bash)Csh:setenvTERMVT100Commonlyusedvariables:(1)Backspa
