Themostbasicinterfacetoacomputer—thecommandline—remainsthemostflexibleandpowerfulwayofprocessingdataandperformingandautomatingvariousday-to-daytasks.CommandLineFundamentalsbeginsbyexploringthebasics,andthenfocusesonthemostcommontool,theBashshell(whichisstandardonallLinuxandiOSsystems).Asyoumakeyourwaythroughthebook,you'llexplorethetraditionalUnixcommand-lineprogramsasimplementedbytheGNUproject.You'llalsolearntouseredirectionandpipelinestoassembletheseprogramstosolvecomplexproblems.Bytheendofthisbook,you'llhaveexploredthebasicsofshellscripting,allowingyoutoeasilyandquicklyautomatetasks.