What Is a Shell?Configuring the ShellProcessesVariablesAliasesSetting Up the Local Environment (Locale)Character EncodingASCIIUnicodelocale SettingsSetting Timedate/etc/timezone and /usr/share/zoneinfohwclocktimedatectlBash Configuration Files/etc/profile/etc/bashrc~/.bash_profile~/.bashrc/etc/profile.dThe source CommandExercise 3-1: Working with Variables, Parameters, and AliasesRedirectionFile DescriptorsTerminal devices/dev/nullstdinstdoutstderrCombining stdout and stderrPipeExercise 3-2: RedirectionChapter ReviewQuestionsAnswers