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• Integration


  Techniques for combining existing software components to form a complete system
• Compiled language


  A language that is converted into machine code so that the processor can execute it
• Interpreted language


  A programming language that is commonly interpreted, it performs instructions clearly and easily
• Differences between server-side and client-side

  • Control
  • Trust
  • Security
• Scripting language


  Used for smaller tasks
• Programming language


  Helps build large and complex software applications
• Optimal programming language use cases

  • Application development
  • System programming
  • Database programming
  • Mobile development
• Web communication


  The collection of ways to communicate over the internet or www
• 1. mail


  Most well-known web communication
• PowerShell


  An object-oriented automation engine and scripting language built on the .NET framework
• Microsoft designed PowerShell to automate system tasks
• Key PowerShell features

  • Discoverability
  • Help capabilities
  • Remote commands
  • Pipelining
• PowerShell Integrated Scripting Environment (ISE)


  An application used to write, test and debug scripts or write commands in a Windows GUI
• Get-help cmdlet


  Displays help at the command line from content in help files on your computer
• Object


  A combination of the properties and methods
• Larry Wall created the first version of Perl in 1987
• Perl


  Originally stands for "Practical Extraction and Reporting Language"
• Basic syntax of a Perl program

  • Always begins with #!/Usr/bin/perl
  • Perl program does not care about white spaces
  • Comments in Perl start with a # or hash symbol
  • Lines starting with = are interpreted as the START of the section of embedded documents
• Perl variables


  Always start with $, @, or %
• Perl variable types


  • Scalars (single string or numeric value)
  • Arrays (ordered sets of values)
  • Hashes (key-value pairs)
• Advantages of Perl


  • Options
  • Flexible
  • Open source
  • Availability
• Optimal Scripting use case examples:

  1. Task automation – automate repetitive task
  2. Glue Code – stitch together
  3. One-off task – quick calculation
  4. Dynamic Web – manipulate webpages
  5. Task scheduling – run a task at a specific time
  6. System administration – automate task like creating backups.
  7. Shell scripting – write shell scrip
• CMD – it is used primarily to execute batch commands and do some primary troubleshooting.
• Perl – Contains Keywords and Variables for storing expressions and statements that execute the program’s logic