mirror of
https://github.com/fleschutz/PowerShell.git
synced 2024-10-06 18:12:11 +02:00
39 lines
956 B
PowerShell
Executable File
39 lines
956 B
PowerShell
Executable File
<#
|
|
.SYNOPSIS
|
|
check-subnet-mask.ps1 [<address>]
|
|
.DESCRIPTION
|
|
Checks the given subnet mask for validity
|
|
.EXAMPLE
|
|
PS> ./check-subnet-mask 255.255.255.0
|
|
.LINK
|
|
https://github.com/fleschutz/PowerShell
|
|
.NOTES
|
|
Author: Markus Fleschutz · License: CC0
|
|
#>
|
|
|
|
param([string]$address = "")
|
|
|
|
function IsSubNetMaskValid { param([string]$IP)
|
|
$RegEx = "^(254|252|248|240|224|192|128).0.0.0$|^255.(254|252|248|240|224|192|128|0).0.0$|^255.255.(254|252|248|240|224|192|128|0).0$|^255.255.255.(255|254|252|248|240|224|192|128|0)$"
|
|
if ($IP -match $RegEx) {
|
|
return $true
|
|
} else {
|
|
return $false
|
|
}
|
|
}
|
|
|
|
try {
|
|
if ($address -eq "" ) { $address = read-host "Enter subnet mask to validate" }
|
|
|
|
if (IsSubNetMaskValid $address) {
|
|
"✔️ subnet mask $Address is valid"
|
|
exit 0
|
|
} else {
|
|
write-warning "Invalid subnet mask: $address"
|
|
exit 1
|
|
}
|
|
} catch {
|
|
"⚠️ Error: $($Error[0]) ($($MyInvocation.MyCommand.Name):$($_.InvocationInfo.ScriptLineNumber))"
|
|
exit 1
|
|
}
|