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2.0 KiB
2.0 KiB
The check-ipv4-address.ps1 Script
This PowerShell script checks the given IPv4 address for validity.
Parameters
/home/markus/Repos/PowerShell/scripts/check-ipv4-address.ps1 [[-Address] <String>] [<CommonParameters>]
-Address <String>
Specifies the IPv4 address to check
Required? false
Position? 1
Default value
Accept pipeline input? false
Accept wildcard characters? false
[<CommonParameters>]
This script supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction,
WarningVariable, OutBuffer, PipelineVariable, and OutVariable.
Example
PS> ./check-ipv4-address 192.168.11.22
✅ IPv4 192.168.11.22 is valid
Notes
Author: Markus Fleschutz | License: CC0
Related Links
https://github.com/fleschutz/PowerShell
Script Content
<#
.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
}
(generated by convert-ps2md.ps1 as of 11/20/2024 11:51:51)