mirror of
https://github.com/fleschutz/PowerShell.git
synced 2024-11-30 03:43:50 +01:00
42 lines
974 B
PowerShell
Executable File
42 lines
974 B
PowerShell
Executable File
<#
|
|
.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
|
|
}
|