PowerShell to remove text from a string

Question

What is the best way to remove all text in a string after a specific character? In my case "=" and after another character in my case a ,, but keep th

Answer 1

I referenced @benjamin-hubbard 's answer above to parse the output of dnscmd for A records, and generate a PHP "dictionary"/key-value pairs of IPs and Hostnames. I strung multiple -replace args together to replace text with nothing or tab to format the data for the PHP file.

$DnsDataClean = $DnsData `
    -match "^[a-zA-Z0-9].+\sA\s.+" `
    -replace "172\.30\.","`$P." `
    -replace "\[.*\] " `
    -replace "\s[0-9]+\sA\s","`t"

$DnsDataTable = ( $DnsDataClean | `
    ForEach-Object { 
        $HostName = ($_ -split "\t")[0] ; 
        $IpAddress = ($_ -split "\t")[1] ; 
        "`t`"$IpAddress`"`t=>`t'$HostName', `n" ;
    } | sort ) + "`t`"`$P.255.255`"`t=>`t'None'"

"" | Out-File -Encoding ASCII -FilePath IpHostLookups.php

Get-Content IpHostLookups.php