Not able to replace the strings in PowerShell

Question

            if ("$string" -match "$key")
            {
                    Write-Host "Attempting to replace $string with $value in $sourcefilename"

                   (Get-Content $sourcefilename).Replace("{{$string}}",$value) | set-content $destinationfilename

            }
          }

Can someone kinldy tell me how to replace the respective values with strings .

Martin Brandl · Accepted Answer · 2016-05-02 16:39:02Z

1

Please nail down your problem next time you ask a question. You want to replace a text from the key value pairs of a dictionary.

You mistake was, that you always read the $sourcefilename, replaced the text and wrote to destinationfilename. Probably only the last entry of your dictionary was replaced.

So you have to read the content only once, iterate over your dictionary and replace the values:

$templatecontent = Get-Content $sourcefilename
$Dictionary.Keys | % { $templatecontent = $templatecontent -replace "{{$_}}", ($Dictionary[$_]) } 
templatecontent | set-content $destinationfilename

edited May 2, 2016 at 16:39

answered May 2, 2016 at 6:21

Martin Brandl

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5 Comments

mahesh Over a year ago

Jisaak, thanks for the reply. I wanted to replace the text if it matches with the dictionary key. That is the reason for adding the if condition. When I'm running the script, it is asking me for some value

if ("$string" -match "$key")   {     $templatecontent = Get-Content $sourcefilename 	$Dictionary.Keys | % { $templatecontent = $templatecontent -replace "{{$_}}", ($Dictionary[$_]) }  	set-content $destinationfilename    }

Output cmdlet Set-Content at command pipeline position 1 Supply values for the following parameters: Value[0]: Can you please tell me the possible solution.

Martin Brandl Over a year ago

yes, I forgot to pipe the content to the Set-Content cmdlet. Fixed my answer.

mahesh Over a year ago

Yes. It is working fine now. I appreciate it. Thank you so much for the solution Jisaak.

Martin Brandl Over a year ago

you are welcome. Even I suggested you to use a hashtable instead of a dictonary ;-)

mahesh Over a year ago

Actually instead of matching each string with key, I'm trying to do this,

if($Dictionary.ContainsKey($string))   {        $Dictionary.Keys | % { $templatecontent = $templatecontent -replace "{{$string}}", ($Dictionary.Keys) } 	   $templatecontent | set-content $destinationfilename   }

But this is not working. Do you know what is the mistake I'm doing here

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