PowerShell/Scripts/check-mac-address.ps1

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#!/snap/bin/powershell
2020-12-29 15:14:21 +01:00
<#
.SYNTAX ./check-mac-address.ps1 [<MAC>]
.DESCRIPTION checks the given MAC address for validity
.LINK https://github.com/fleschutz/PowerShell
.NOTES Author: Markus Fleschutz / License: CC0
#>
# Author: Markus Fleschutz
# Source: github.com/fleschutz/PowerShell
# License: CC0
param([string]$MAC)
# MAC-Address like 00:00:00:00:00:00 or 00-00-00-00-00-00 or 000000000000
$RegEx = "^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})|([0-9A-Fa-f]{2}){6}$"
try {
if ($MAC -eq "" ) {
$MAC = read-host "Enter MAC address to validate"
}
if ($MAC -match $RegEx) {
write-output "MAC address $MAC is valid"
exit 0
} else {
write-output "MAC address $MAC is NOT valid"
exit 1
}
} catch {
write-error "ERROR in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
exit 1
}