bash Quick Reference 2006.pdf

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1、ContentsbashQuickHistory........................................................2OverviewofFeatures.................................2ReferenceInvokingtheShell......................................3Syntax..........................................................4ByArn

2、oldRobbinsFunctions..................................................10Variables...................................................10Copyright©2006O'ReillyMedia,Inc.ISBN:0596527764ArithmeticExpressions...........................19Inthisquickreference,you'llfindComman

3、dHistory...................................20everythingyouneedtoknowabouttheJobControl...............................................25bashshell.WhetheryouprintitoutorShellOptions............................................26readitonthescreen,thisbookgivesCommandExec

4、ution...............................28youtheanswerstotheannoyingquestionsthatalwayscomeupwhenRestrictedShells.......................................29you'rewritingshellscripts:WhatBuilt-inCommands..................................29charactersdoyouneedtoquote?HowResou

5、rces..................................................64doyougetvariablesubstitutiontodoexactlywhatyouwant?Howdoyouusearrays?It'salsohelpfulforinteractiveuse.Ifyou'reaUnixuserorprogrammer,orifyou'reusingbashonWindows,you'llfindthisquickreferenceindispensable.Findmore

6、atpdfs.oreilly.comCHAPTER1TheBashShellThisreferencecoversBash,whichistheprimaryshellforGNU/LinuxandMacOSX.Inparticular,itcoversversion3.1ofBash.BashisavailableforSolarisandcanbeeasilycom-piledforjustaboutanyotherUnixsystem.Thisreferencepresentsthefollowingtopics:•His

7、tory•Overviewoffeatures•Invokingtheshell•Syntax•Functions•Variables•Arithmeticexpressions•Commandhistory•Jobcontrol•Shelloptions•Commandexecution•Restrictedshells•Built-incommands•Resources1HistoryTheoriginalBourneshelldistributedwithV7Unixin1979becamethestandardshel

8、lforwritingshellscripts.TheBourneshellisstillbefoundin/bin/shonmanycommercialUnixsystems.TheBourneshellitselfhasnotchangedthatmuchs