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42 lines
973 B
PowerShell
Executable File
42 lines
973 B
PowerShell
Executable File
<#
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.SYNOPSIS
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Checks the given MAC address for validity
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.DESCRIPTION
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Supported MAC address formats are: 00:00:00:00:00:00 or 00-00-00-00-00-00 or 000000000000.
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check-mac-address.ps1 [<MAC>]
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.EXAMPLE
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PS> ./check-mac-address 11:22:33:44:55:66
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✔️ MAC address 11:22:33:44:55:66 is valid
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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 · License: CC0
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#>
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param([string]$MAC = "")
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function IsMACAddressValid { param([string]$mac)
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$RegEx = "^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})|([0-9A-Fa-f]{2}){6}$"
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if ($mac -match $RegEx) {
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return $true
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} else {
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return $false
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}
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}
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try {
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if ($MAC -eq "" ) {
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$MAC = read-host "Enter MAC address to validate"
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}
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if (IsMACAddressValid $MAC) {
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"✔️ MAC address $MAC is valid"
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exit 0 # success
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} else {
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write-warning "Invalid MAC address: $MAC"
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exit 1
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}
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} catch {
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"⚠️ Error: $($Error[0]) ($($MyInvocation.MyCommand.Name):$($_.InvocationInfo.ScriptLineNumber))"
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exit 1
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}
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