Powershell: Extract IP from AWS Output

Question

I'm trying to extract an IP address from the output of AWS CLI command "describe-tags". I'm very new to Powershell and have been struggling. This is the output of the AWS command in both "text" and "json" formats.

If you can help me extract just the IP address from either of these formats, I'd greatly appreciate it. I'm using "Powershell 2" and ConvertFrom-JSon isn't available in this version. Let's just assume I can't upgrade to Powershell 3.

TEXT:

TAGS    nameserver      i-xxxxxxxx      instance        10.0.0.56

JSON:

{
    "Tags": [
        {
            "ResourceType": "instance",
            "ResourceId": "i-xxxxxxxx",
            "Value": "10.0.0.56",
            "Key": "nameserver"
        }
    ]
}

Thanks a lot!

Loïc MICHEL · Accepted Answer · 2015-03-17T18:23:43.230

1

you could use a regex, for example :

[regex]::match($awsoutput,"\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b").Value

edited Mar 17 '15 at 18:23

answered Mar 17 '15 at 06:32

Loïc MICHEL

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score 0 · Answer 2 · answered Apr 13 '20 at 17:20

I wouldn't use regex here. Whenever I'm stuck on an older PS version without support for a feature I want, I look to see if someone has scripted the equivalent feature.

See here for an example: PowerShell 2.0 ConvertFrom-Json and ConvertTo-Json implementation

Powershell: Extract IP from AWS Output

2 Answers2