mirror of
https://github.com/fleschutz/PowerShell.git
synced 2024-11-15 12:34:25 +01:00
82 lines
1.9 KiB
Markdown
82 lines
1.9 KiB
Markdown
## The *check-ipv4-address.ps1* Script
|
||
|
||
This PowerShell script checks the given IPv4 address for validity.
|
||
|
||
## Parameters
|
||
```powershell
|
||
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
|
||
```powershell
|
||
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
|
||
|
||
## Source Code
|
||
```powershell
|
||
<#
|
||
.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 using the comment-based help of check-ipv4-address.ps1*
|