Do - PowerShell

Overview

The Do command is a loop construct in PowerShell that allows you to execute a block of code repeatedly. It’s particularly useful when you need to iterate over a collection of data or perform a specific task a predefined number of times.

Syntax

Do 
{
    <script block>
}
[while (<condition>)]

Options/Flags

None

Examples

Example 1: Iterating over a range of numbers

Do 
{
    Write-Host $i
    $i++
} while ($i -le 10)

Example 2: Executing a script block based on a condition

$condition = $true
Do 
{
    Write-Host "Condition is true."
} while ($condition)

Common Issues

  • The loop condition must evaluate to $true or $false. If the condition is not met, the loop will execute indefinitely.
  • Ensure the loop increment/decrement variable is correctly updated within the loop block to avoid infinite looping.

Integration

Do can be combined with other PowerShell tools, such as ForEach-Object or Where-Object, for more advanced looping scenarios.

  • For
  • ForEach-Object
  • While