Donald A. Tevault - but you can call him Donnie - got involved with Linux way back in 2006, and has been working with it ever since. He holds the Linux Professional Institute Level 3-Security certification, and the GIAC Incident Handler certification. Donnie is a professional Linux trainer, and thanks to the magic of the internet, teaches Linux classes literally the world over from the comfort of his living room. He's also a Linux security researcher for an IoT security company.

• Table of ContentsGetting Started with the ShellInterpreting CommandsUnderstanding Variables and PipelinesUnderstanding Input/Output RedirectionCustomizing the EnvironmentText Stream Filters – Part 1Text Stream Filters – Part 2Basic Shell Script ConstructionFiltering Text with grep, sed, and Regular ExpressionsUnderstanding FunctionsPerforming Mathematical OperationsAutomating Scripts with here Documents and expectScripting with ImageMagickUsing awk–Part 1Using awk–Part 2Creating User Interfaces with yad, dialog, and xdialogUsing Shell Options with getopsShell Scripting for Security ProfessionalsShell Script PortabilityShell Script SecurityDebugging Shell ScriptsIntroduction to Z Shell Scripting

Donald A. Tevault - but you can call him Donnie - got involved with Linux way back in 2006, and has been working with it ever since. He holds the Linux Professional Institute Level 3-Security certification, and the GIAC Incident Handler certification. Donnie is a professional Linux trainer, and thanks to the magic of the internet, teaches Linux classes literally the world over from the comfort of his living room. He's also a Linux security researcher for an IoT security company.

• Table of ContentsGetting Started with the ShellInterpreting CommandsUnderstanding Variables and PipelinesUnderstanding Input/Output RedirectionCustomizing the EnvironmentText Stream Filters – Part 1Text Stream Filters – Part 2Basic Shell Script ConstructionFiltering Text with grep, sed, and Regular ExpressionsUnderstanding FunctionsPerforming Mathematical OperationsAutomating Scripts with here Documents and expectScripting with ImageMagickUsing awk–Part 1Using awk–Part 2Creating User Interfaces with yad, dialog, and xdialogUsing Shell Options with getopsShell Scripting for Security ProfessionalsShell Script PortabilityShell Script SecurityDebugging Shell ScriptsIntroduction to Z Shell Scripting

Donald A. Tevault - but you can call him Donnie - got involved with Linux way back in 2006, and has been working with it ever since. He holds the Linux Professional Institute Level 3-Security certification, and the GIAC Incident Handler certification. Donnie is a professional Linux trainer, and thanks to the magic of the internet, teaches Linux classes literally the world over from the comfort of his living room. He's also a Linux security researcher for an IoT security company.

• Table of ContentsGetting Started with the ShellInterpreting CommandsUnderstanding Variables and PipelinesUnderstanding Input/Output RedirectionCustomizing the EnvironmentText Stream Filters – Part 1Text Stream Filters – Part 2Basic Shell Script ConstructionFiltering Text with grep, sed, and Regular ExpressionsUnderstanding FunctionsPerforming Mathematical OperationsAutomating Scripts with here Documents and expectScripting with ImageMagickUsing awk–Part 1Using awk–Part 2Creating User Interfaces with yad, dialog, and xdialogUsing Shell Options with getopsShell Scripting for Security ProfessionalsShell Script PortabilityShell Script SecurityDebugging Shell ScriptsIntroduction to Z Shell Scripting