Renamed folder Scripts to scripts

scripts/check-ipv4-address.ps1

@@ -0,0 +1,41 @@
+<#
+.SYNOPSIS
+	Checks an IPv4 address for validity
+.DESCRIPTION
+	This PowerShell script checks the given IPv4 address for validity.
+.PARAMETER Address
+	Specifies the IPv4 address to check
+.EXAMPLE
+	PS> ./check-ipv4-address 192.168.11.22
+	✔️ IPv4 192.168.11.22 is valid
+.LINK
+	https://github.com/fleschutz/PowerShell
+.NOTES
+	Author: Markus Fleschutz | License: CC0
+#>
+
+param([string]$Address = "")
+
+function IsIPv4AddressValid { param([string]$IP)
+	$RegEx = "^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$"
+	if ($IP -match $RegEx) {
+		return $true
+	} else {
+		return $false
+	}
+}
+
+try {
+	if ($Address -eq "" ) { $Address = read-host "Enter IPv4 address to validate" }
+
+	if (IsIPv4AddressValid $Address) {
+		"✔️ IPv4 $Address is valid"
+		exit 0 # success
+	} else {
+		write-warning "Invalid IPv4 address: $Address"
+		exit 1
+	}
+} catch {
+	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}