Extracting Multiple strings from a text file RRS feed

  • Question

  • Hi,

    I need to search for a string "policy_name" in a TEXT file  and extract all the corresponding "policy_member"s . I have to do this recursively till end of file.

    With this command it only gives me the "policy_name":

    $matches = Select-String -Pattern “policy_name” -Path

     I could search for the string "policy_member" , but then I will not know the corresponding "policy_name". Thats the reason I need something like a while/for loop and get for the POSITION of the "policy_name" when I find it. Then use the POSITION to determine the start of the following "policy_member"

    Here is a snippet of the input TXT file:

    policy_name Blacklist Senders policy_name_end
              policy_name Safelist Senders policy_name_end
                     policy_member_end  policy_name  Blocked Recipients policy_name_end

    Thursday, July 20, 2017 3:03 PM

All replies

  • maybe it helps you

    Example 8: Find lines before and after a match

    PS C:\> $F = Select-String -Path "audit.log" -Pattern "logon failed" -Context 2, 3
    PS C:\> $F.count
    PS C:\> ($F)[0].context | Format-List


    Thursday, July 20, 2017 5:26 PM
  • Thanks Chris. Good Start

    Any ideas on how I would be able to loop through and extract the components of each line using the For loop

    $F = Select-String -Path "C:\Temp\IronPortEval\config_clus.txt" -Pattern "policy_name" -Context 2, 3
    $MaxCount = $f.count
    For ($i=0; $i -le $MaxCount; $i++) {       

    • Edited by hdsouza Saturday, July 22, 2017 3:46 PM
    Saturday, July 22, 2017 3:41 PM
  • Something like this?

    $F = Select-String -Path "C:\Temp\IronPortEval\config_clus.txt" -Pattern "policy_name(.*?)policy_name_end"  -AllMatches
    $MaxCount = $f.count
    For ($i=0; $i -le $MaxCount; $i++) { $_ }

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    Sunday, July 23, 2017 8:34 PM
  • Not sure about the detail structure of the input file. Based on your snippet of INPUT txt file, I would convert it to xml and process as xml. :) just my 10c

    $xmlPolicies = [xml]([string[]]'<root>'+ ((gc 'c:\temp\input.txt') -replace '\s*(policy_(name|member))_end', '</$1>' -replace'policy_(name|member)([^>]|$)\s*', '<policy_$1>' -replace '(<policy_name>)', '<pol>$1' -replace '(</policy_member>)', '$1</pol>') + '</root>' )
    $hashPolicies = @{}
    $xmlPolicies.root.ChildNodes | % { $hashPolicies[$_.Policy_name]=$_.policy_member}



    Monday, July 24, 2017 9:56 AM
  • Hi,
    Just checking in to see if the information provided was helpful. Please let us know if you would like further assistance.

    Best Regards,


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    Friday, August 11, 2017 4:42 AM