Perl for System Administration

GB Direct

Course

Online

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Description

  • Type

    Course

  • Methodology

    Online

A specialist Perl training course for system administrators, who want to use the Perl programming language to get their jobs done more quickly and efficiently.

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Subjects

  • Perl
  • IT

Course programme

Preparing to learn perl

  • Things you need to know and do in order to run Perl programs and learn Perl programming
  • A module designed for complete beginners
  • The perl compiler/interpreter
  • Perl under Unix/Linux
  • Perl under MS Windows 2000/NT/95/98/ME (perl.exe)
  • ActiveState Perl
  • Making programs executable (chmod +x)
  • Perl from the command line (perl command)
  • Specify the perl compiler/interpreter (#!)
  • Using plain text for programs
  • Writing a very simple program
  • Running a very simple program
  • Basic syntax

Perl: the absolute minimum

  • Enough of the language to get started
  • The print function
  • Variables
  • Scalars — numbers and strings
  • Assignment
  • Simple conditional tests — if
  • Lists
  • Arrays — for storing lists foreach loops
  • Hashes
  • Other loops: while, for, do, until
  • Arrays — the rest
  • Simple input, e.g., while(<>)
  • Functions overview — recognising, writing, using
  • Simple file handling — open, print
  • Subroutines — parameters in and out, listification, local variables (my)
  • Help — perldoc, books, web

Regular expressions

  • Text manipulation with regular expressions
  • Matching strings
  • Matching the default variable
  • Case-sensitivity and matching
  • Special characters
  • Special characters: where
  • Special characters: what
  • Special characters: how many
  • Built-in character classes
  • Built-in character class examples
  • Capturing
  • Regular expression examples
  • Substitution
  • Global substitutions

Perl: beyond the basics

  • More flow control
  • Statement modifiers
  • Quoting mechanisms — qq(), etc.
  • Here documents
  • Uppercase/lowercase conversion
  • Splitting strings into lists
  • Joining lists into strings
  • Filtering lists with map
  • Sorting lists
  • The importance of context
  • Assignment shortcuts
  • Scoping rules
  • Special variables

Finding Out More For Yourself

  • How to read Perl's documentation
  • Where to find more information
  • Knowing what's out there to look for
  • FAQs

Using Perl Modules from CPAN

  • The Comprehensive Perl Archive Network (CPAN)
  • Why effective Perl programmers are efficient CPAN users
  • CPAN's philosophy
  • Finding modules
  • Installing Modules
  • Using modules
  • Some particularly useful modules

The Perl debugger & debugging perl

  • Avoiding bugs
  • Perl's built-in debugger
  • Invoking the debugger
  • What you can do with the debugger
  • Understanding the debugger's command line interface
  • Knowing the debugger's basic command set
  • Exploring some extended functions
  • Graphical debuggers
  • Alternative debugging techniques

Command-Line Perl

  • General principles
  • Using Perl as a filter
  • Editing files in-place
  • Many real world examples
  • Command line flags
  • Many examples using regular expressions

A Whistle-Stop Tour of the World of Perl

  • Wheels you don't need to re-invent
  • Common recipes
  • Common pitfalls

Advanced File Processing with Perl

  • Types of open
  • Filehandles
  • Reading line by line
  • Reading paragraph by paragraph
  • Reading entire files
  • Special variables
  • The flip-flop operator (..)
  • File test functions
  • Pipes

Perl Security Issues

  • Potential security pitfalls
  • Coding for security
  • Taint checking
  • Dangerous environment variables
  • File input
  • Set-user-id Perl programs
  • Permissions and users

System interaction

  • Connecting to other programs
  • Unsafe pipes
  • Using IO::Pipe
  • Grabbing a program's output
  • Other ways to run programs

Managing Users and Processes with Perl

  • User identity across platforms
  • Process control
  • Scheduling events
  • Managing disk quotas
  • Querying filesystem usage
  • Monitoring file operations
  • Monitoring network operations
  • Related perl modules

Managing Networks with Perl

  • Host Files
  • DNS
  • NIS lookups
  • WHOIS
  • LDAP
  • ADSI
  • Sending and receiving email
  • Related modules

Logging with Perl

  • Text logs
  • Logs used on Unix
  • Handling state
  • Disk usage problems
  • Log analysis
  • Log munging
  • Logging related modules

See related categories

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