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40 lines
868 B
PowerShell
Executable File
40 lines
868 B
PowerShell
Executable File
<#
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.SYNOPSIS
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check-ipv4-address.ps1 [<address>]
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.DESCRIPTION
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Checks the given IPv4 address for validity
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.EXAMPLE
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PS> .\check-ipv4-address.ps1 192.168.11.22
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.LINK
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https://github.com/fleschutz/PowerShell
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.NOTES
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Author: Markus Fleschutz
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License: CC0
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#>
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param([string]$Address = "")
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function IsIPv4AddressValid { param([string]$IP)
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$RegEx = "^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$"
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if ($IP -match $RegEx) {
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return $true
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} else {
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return $false
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}
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}
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try {
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if ($Address -eq "" ) { $Address = read-host "Enter IPv4 address to validate" }
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if (IsIPv4AddressValid $Address) {
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"✔️ IPv4 address $Address is valid"
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exit 0
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} else {
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write-warning "Invalid IPv4 address: $Address"
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exit 1
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}
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} catch {
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write-error "⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
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exit 1
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}
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