apress pro bash programming scripting the gnu linux shell oct 2009外语英文电子书

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1、THEEXPERT’SVOICE®INLINUXCoveringBash4.0ProBashProgrammingScriptingtheGNU/LinuxShellProgrammingbashfromone-linerstoprofessionalprogramsChrisF.A.JohnsonBOOKSFORPROFESSIONALSBYPROFESSIONALS®ProBashProgramming:ScriptingtheGNU/LinuxShellDearReader,Theshellisaprogramminglanguage!Ashells

2、criptisasmuchaprogramasanythingwritteninC,Python,oranyotherprogramminglanguage.Justbecauseshellscriptsareeasiertowritedoesn’tmeantheyshouldtakeaback-seattocompiledprogramsorotherscriptinglanguages.AuthorofIwroteProBashProgrammingtopresentatutorialthatintroducestheshell,ShellScript

3、ingRecipes:andbashspecifically,asaprogramminglanguage.IfyouneedaprogramtoAProblem-SolutionaccomplishataskonGNU/LinuxoranyotherUnix-typesystem,IwantyouApproachtoconsidertheshellbeforeanyotherlanguage.Ifyouwriteaprototypeforaprogramusingtheshell,Iwantyoutorealizethatyoudon’tneedtotr

4、anslateittoanotherlanguage.Thisbookwillgiveyouagroundinginprogrammingtechniquesusedinwritingshellprogramsnomatterwhatyourpastprogrammingexperience.Ifyou’veneverwrittenacomputerprogrambefore,ProBashProgrammingwillgetyoustartedandhelpyoubecomeaproficientshellprogrammer.Ifyouhavewrit

5、tenafewshellprograms,thisbookwilltakeyoutothenextlevelandbeyond.Itwillenableyoutodothingswiththeshellyouneverthoughtitcoulddo.Ifyouarealreadyanexpertshellprogrammer,thisbookwillprovideinsightintotheadvancedshellprogramming,helpingyouwritemore,andmoreeffi-cient,scripts.Bashistheshe

6、lloftheFreeSoftwareFoundation’sGNUprojectandisthestandardshellonalmostallLinuxdistributions.Itistheshellyouprobablyuseatthecommandline.ItoffersprogrammersmanyenhancementsoverthestandardUnixshell.YouwillfindbashonmanyversionsofUnix.Itmaynotbethedefaultshell,butitisusuallyavailablef

7、orinterpretingyourscripts.IhopethisbookwillhelpyoubecomeamoreproductiveprogrammerandCompanioneBookthatyourprogramswillbewrittenusingtheBashshell.ChrisF.A.JohnsonTHEAPRESSROADMAPSeelastpagefordetailsExpertShellon$10eBookversionBeginningPerl2ndEditionScriptingBeginningtheBeginningUb

8、untuLTSServerProBashLinuxCommandL