PowerShell/Scripts/check-ipv4-address.ps1
2021-10-04 21:29:23 +02:00

40 lines
920 B
PowerShell
Executable File

<#
.SYNOPSIS
Checks the given IPv4 address for validity
.DESCRIPTION
check-ipv4-address.ps1 [<Address>]
.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: $($Error[0]) ($($MyInvocation.MyCommand.Name):$($_.InvocationInfo.ScriptLineNumber))"
exit 1
}