mirror of
https://github.com/fleschutz/PowerShell.git
synced 2024-11-23 16:33:20 +01:00
35 lines
864 B
PowerShell
Executable File
35 lines
864 B
PowerShell
Executable File
#!/usr/bin/pwsh
|
|
<#
|
|
.SYNTAX check-ipv4-address.ps1 [<address>]
|
|
.DESCRIPTION checks the given IPv4 address for validity
|
|
.LINK https://github.com/fleschutz/PowerShell
|
|
.NOTES Author: Markus Fleschutz / License: CC0
|
|
#>
|
|
|
|
param($Address = "")
|
|
|
|
function IsIPv4AddressValid { param([string]$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) {
|
|
write-host -foregroundColor green "OK - IPv4 address $Address is valid"
|
|
exit 0
|
|
} else {
|
|
write-warning "Invalid IPv4 address: $Address"
|
|
exit 1
|
|
}
|
|
} catch {
|
|
write-error "ERROR: line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
|
|
exit 1
|
|
}
|