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Calculate The Levenshtein Distance in Java

Calculate The Levenshtein Distance in Java

Java Algorithms And Data Structures
Tutorial
Stephen Enright, jan 10
Class Loaders in Java

Class Loaders in Java

Java
Tutorial
Stephen Enright, feb 11
When To Use The Final Keyword In Java

When To Use The Final Keyword In Java

Java
Tutorial
Stephen Enright, may 20
The Modulo Operator In Java

The Modulo Operator In Java

Java Operators
Tutorial
Stephen Enright, may 25

Tutorials

Powershell Introduction

Powershell Introduction

Powershell
Tutorial
By Stephen Enright, dec 01, 2012

Windows PowerShell provides a .Net environment that provides a powerful command line shell, and a scripting environment for the windows platform. PowerShell is useful for a number of tasks, including system administration.
PowerShell Pipeline

PowerShell Pipeline

Powershell
Tutorial
By Stephen Enright, dec 04, 2012

The PowerShell pipeline facilitates passing the output of a command as input to another. Pipelines are a common mechanism for joining commands for example the Linux shell provides this feature.
PowerShell Cmdlet

PowerShell Cmdlet

Powershell
Tutorial
By Stephen Enright, dec 02, 2012

You can think of a cmdlet as being similar to a shell command. A cmdlet performs a task. PowerShell comes with a number of cmdlets that follow a particular naming convention. They follow a Verb-Noun naming convention e.g. Get-Process, Get-ChildItem, Get-Command etc.
PowerShell Read File Contents

PowerShell Read File Contents

Powershell
Tutorial
By Stephen Enright, dec 05, 2012

PowerShell offers a number of cmdlets for working with files. Sometimes we may need to retrieve the contents of file, to display it, or process it. PowerShell provides a number of different ways to access the contents of a file.
PowerShell Searching With Regular Expressions

PowerShell Searching With Regular Expressions

Powershell
Tutorial
By Stephen Enright, dec 07, 2012

Regular expressions provide a powerful mechanism to search a file for text that has a particular pattern. We can use a regular expression to define a particular pattern. For example, we can define a regular expression to match a phone number, email, Uniform Resource Locator (URL) etc. We can define a regular expression to match a piece of text.
PowerShell Search File For Pattern

PowerShell Search File For Pattern

Powershell
Tutorial
By Stephen Enright, dec 06, 2012

PowerShell provides functionality to search the contents of one or more files for a pattern. The Select-String cmdlet enables us to achieve this goal.
PowerShell File Comparison

PowerShell File Comparison

Powershell
Tutorial
By Stephen Enright, dec 10, 2012

A very common task is to compare two files for differences. We may perform this task as part of a post install verification process. PowerShell provides a couple of Cmdlets that aid with this activity.
PowerShell: Creating Files

PowerShell: Creating Files

Powershell
Tutorial
By Stephen Enright, dec 09, 2012

Sometimes we find the need to create files. We can create files with PowerShell. There are a number of different ways to create a file. We will look at some of the mechanisms here.
PowerShell Find Files Modified After Date

PowerShell Find Files Modified After Date

Powershell
Tutorial
By Stephen Enright, dec 11, 2012

We can use PowerShell to find files modified after a certain date. This task can be useful to find recently modified files on a system. We can use the Get-ChildItem cmdlet to perform this task. The Get-ChildItem CmdLet provides the Recurse parameter which allows us to search in child directories.
PowerShell Monitor Files For Changes

PowerShell Monitor Files For Changes

Powershell
Tutorial
By Stephen Enright, dec 13, 2012

We can use PowerShell to monitor files for changes. The Get-Content Cmdlet provides the Wait parameter. The wait parameter will monitor the end of a file for any changes. This task can be useful in a number of situations such as monitoring a log file for changes.

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