Replace last octet of IP addresses?

[StockMinute31]

I am trying to get a list of IP addresses of the computer I am connected onto.

I have achieved this via:

$IPV4Addresses = Get-NetIPAddress -AddressFamily ‘IPv4’ | Select-Object -ExpandProperty ‘IPAddress’

This outputs as a list of 8 IP addresses. I’m wondering how I can replace the last octet on each IP address so they become xxx.xxx.xx.*

as a bonus I would also like to separate the final output by ;

Is this easy to achieve?

 

• This topic was modified 3 weeks ago by StockMinute31.

[kvprasoon Senior Moderator Topics: 9 Replies: 1449 Points: 5,426Rank: Community MVP]

since the output is a collection, a simple way would be to iterate through each of them and do split and join.

PowerShell

$IPV4Addresses | ForEach-Object -Process { $SplitItem = $_.ToString() -split '\.' $SplitItem[3] = $NewLastOctet $NewIP = $SplitItem -Join '.' $NewIP }

1 2 3 4 5 6

$IPV4Addresses | ForEach-Object -Process {    $SplitItem = $_.ToString() -split '\.'    $SplitItem[3] = $NewLastOctet    $NewIP = $SplitItem -Join '.'    $NewIP }

PS: Untested code

[StockMinute31]

Hi,

Thanks for this the output came out like this:

How can I now format that to separate by ; ?

• This reply was modified 3 weeks ago by StockMinute31.

[Matt Bloomfield Participant Topics: 4 Replies: 427 Points: 756Rank: Major Contributor]

When working with IPs like that, I usually just use a ‘\d+$’ to replace the last octet.

For your desired output:

 

PowerShell

($IPV4Addresses | foreach {$_ -replace '\d+$','*'}) -join ';'

1	($IPV4Addresses | foreach {$_ -replace '\d+$','*'}) -join ';'

[StockMinute31 Participant Topics: 2 Replies: 2 Points: 23Rank: Member]

That works great! thank you for this! 🙂

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