LinuxCBT feat. KornShell Edition focuses on the common Linux | Unix shell environment: Korn. It extends LinuxCBT Scripting Edition.

Kornshell derives largely from Bourne and C shells, incorporating many features from both. Kornshell also largely influenced the default Linux shell: BASH. Being familiar with Kornshell and BASH allows you to transport your skills across Linux and Unix systems with relative ease.

Let LinuxCBT feat. KornShell Edition cost-effectively teach you Linux | Unix shell skills.

Recommended Prerequisites for:

• Any LinuxCBT Operating System Course (Classic/EL-4|5/SUSE/Debian Editions)
  • Open mind & determination to master Linux and related open-source applications
  • Access to a Linux, Solaris or KornShell-compatible system to follow the exercises

LinuxCBT feat. KornSHell Edition - Module VII

• Introduction - Features
  • Discuss KornShell history
  • Explore system configuration
  • Identify key systems to be used
  • Discuss key features
• Shell Basics
  • Create KornShell users on various systems
  • Identify key KornShell binaries and configuration files
  • Explore key KornShell variables
  • Discuss shell redirection and piping
• Command Chaining | Substitution
  • Discuss features and applications
  • Explain general usage of 'test' command
  • Evaluate sequential execution of processes
  • Invoke commands contingently using logical AND and OR
  • Implement command substitution
  • Evaluate defined variables using command substitution
• Variables
  • Discuss features and applications
  • Discuss and reference positional parameters
  • Explore standard command exit status variable
  • Learn how to define variables
  • Define persistent variables
  • Unset variables and evaluate
• The Prompt - $PS{1..4}
  • Discuss various prompt shell variables
  • Setup vi-style command history access
  • Customize primary prompt with useful KornShell variables
  • Define a persistent prompt
  • Evaluate results
• Functions
  • Discuss features and benefits
  • Explore POSIX and KornShell functions
  • Define useful functions in a script
  • Reference functions from a script
  • Discuss how positional parameters are supported with funcitons
  • Evaluate results
• Loops
  • Discuss features and benefits
  • Identify the supported iteration mechanisms
  • Implement for | while | until loops
  • Create finite and infinite loops
  • Evaluate results
• Conditions
  • Discuss features and applications
  • Explore comparison testing
  • Perform numeric comparisons
  • Perform string comparisons
  • Branch out using if | elif | else
  • Evaluate results
• Error Handling
  • Discuss features and applications
  • Create script which requires a positional parameter
  • Error handle as necessary
  • Confirm the existence of the file referenced by the positional parameter
  • Compartmentalize error handling into a function
  • Evaluate results
• Backup Script
• Discuss features and benefits
• Write a script to backup various files and directories
• Ensure that script is executed with appropriate number of positional parameters
• Auto-create backup file name using a unique date identifier
• Tar and compress (using gzip) backup items
• Incorporate error handling
• Evaluate results
• Arrays
  • Discuss features and applications
  • Explain supported arrays
  • Define indexed array with various items
  • Reference individual and total array elements
  • Evaluate results
  • Build indexed array using command substitution
  • Loop through array elements
  • Define associative array with various items
  • Expose total array elements
• Regular Expressions
  • Discuss features and applications
  • Highlight key metacharacters
  • Use character-classes
  • Implement RegExes with shell commands: ls|grep|awk|sed
  • Evaluate results
• Kornshell on Solaris
  • Compare & contrast Linux and Solaris Korn implementation
  • Create Kornshell user on Solaris
  • Identify key files
  • Explore Solaris Kornshell as the user
  • Customize Solaris Kornshell environment
  • Run scripts created on Linux
  • Evaluate results
• Case
  • Discuss features and benefits
  • Explain usage
  • Create cases based on simple RegExes
  • Write script to identify file types using case
  • Explore case usage in system scripts
  • Evaluate results
• Job Control
  • Discuss features and benefits
  • Background and foreground jobs
  • Interact with running jobs
  • Isolate jobs from TTY
  • Evaluate results
• Typeset
  • Discuss features and benefits
  • Define variables of disparate types
  • Justfiy variables
  • Transform positional parameters and variables
  • Enumerate system variables
  • Scope variables in and out of functions
  • Evaluate results
• Input Validation
  • Discuss features and benefits
  • Ensure the requisite number of positional parameters
  • Confirm input prior to execution
  • Evaluate results
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