2020-12-22 11:10:16 +01:00
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#!/snap/bin/powershell
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2020-12-29 15:14:21 +01:00
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<#
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.SYNTAX ./check-ipv4-address.ps1 [<address>]
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.DESCRIPTION checks the given IPv4 address for validity
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.LINK https://github.com/fleschutz/PowerShell
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.NOTES Author: Markus Fleschutz / License: CC0
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#>
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2020-12-22 11:10:16 +01:00
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param([string]$Addr)
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# IPv4-Address like 192.168.178.1
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$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]?)$"
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try {
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if ($Addr -eq "" ) {
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$Addr = read-host "Enter IPv4 address to validate"
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}
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if ($Addr -match $RegEx) {
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write-output "IPv4 address $Addr is valid"
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exit 0
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} else {
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write-output "IPv4 address $Addr is NOT valid"
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exit 1
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}
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} catch {
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write-error "ERROR in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
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exit 1
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}
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