Chapter 1 : Introducing Bash Shell Scripting / Topic : Introduction, Elements of a Good Shell Script, Executing the Script, Working with Variables and Input,Understanding Variables, Variables, Subshells, and Sourcing, Working with Script Arguments, Asking for Input, Using Command Substitution, Substitution Operators, Changing Variable Content with Pattern Matching, Performing Calculations, Using Control Structures, Using if...then...else, Using case, Using while, Using until, Using for. / Content : Introduction, Elements of a Good Shell Script, Executing the Script, Working with Variables and Input,Understanding Variables, Variables, Subshells, and Sourcing, Working with Script Arguments, Asking for Input, Using Command Substitution, Substitution Operators, Changing Variable Content with Pattern Matching, Performing Calculations, Using Control Structures, Using if...then...else, Using case, Using while, Using until, Using for.