PowerShell Cheat Sheet

$x = 1
New-Variable -Name x -Value 12
Get-Variable x -valueonly
Set-Variable -Name x -Value 34
Clear-Variable -Name x
Remove-Variable -Name x

# Print the value
$x
# which is an equivalent of:
Write-Host $x

# Get the type
$x.GetType()
# Strongly typed
[int]$x = 2

# Comparisons
$x -eq 20
$x -gt 20
$x -lt 20

$str = 'Text 1'
$str2 = "Text 2"

# Newline

"First line`nSecond line"
$multiline = @"
  Multiline text
  Anouther line
  "@

# Single quotes

$multiline = @'
  Multiline text
  Anouther line
'@

# Variables in text
$x = 1
$y = 1
"Text with variable $x and $y"

# Formatting text
[String]::Format("Some text with {0}", $x)

# Short version
"Some text {0} and {1}" -f $x, $y

arr = "one", "two", "three"
$arr[0]
$arr[1]
$arr1 = @()
$arr1 = @("one", "two")
$arr1.Count
$arr2 = 1..10
$arr2 -contains 5
$arr2 -notcontains 10
$ht = @{"Name" = "Tom",
        "Surname" = "Cruise"}
$ht["Name"]
$ht."Name"
$key = "Name"
$ht.$key
$ht.Remove("Name")
$ht.Contains("Name")
$ht.ContainsValue("Tom")
$ht.Keys
$ht.Values

$true
$false
$NULL
# Current directory
$pwd
# Current object
$_
Get-ChildItem | Where-Object {$_.Name -like "*.cs"}