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Delete pair of lines in text file based on string in 2nd line

Answered Delete pair of lines in text file based on string in 2nd line

  • Friday, June 15, 2012 6:21 PM
     
     
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    I'm attempting to write a Powershell script that cycles through a text file filled with pairs of lines.  There isn't any whitespace between these pairs of lines.  As I cycle through, I'm checking the 2nd line in each of these pairs for a certain string, and if it's a match, I want to delete that pair of lines.  This seems pretty simple, but I'm having difficulty getting the logic correct to do this.  What's the best way to do this?
     

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  • Friday, June 15, 2012 6:52 PM
     
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    Something like this?  (Not tested):

    $output = @()
$pairs = Get-Content -Path 'inputfile.txt' -ReadCount 2
foreach ($pair in $pairs) {
    if ($pair[1] -notmatch 'Pattern') {
        $output += $pair
        }
    }
$output

    Grant Ward, a.k.a. Bigteddy

     
  • Friday, June 15, 2012 6:59 PM
     
     
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    Thanks!  I figured it would be something simple.  I haven't tested yet, but I don't see any reason that shouldn't work.