Add some data at the end of a specific line of a file in powershell

Question

I need to find in a file specific line and add some data at the end of the line, something like this:

function AddSomeData($file, $key, $value) 
{
    $content = Get-Content $file
    if ($content -match "I work very") 
    {
        $content- add at the end $value
        Set-Content $file     
    }
}

AddSomeData "settings.conf" "I work very" " hard"

As a result - file with changed line: I work very hard. How to do that ?

Erik Blomgren · Accepted Answer · 2014-07-04 03:17:57Z

1

Here's how I'ld do it:

Function AddSomeData(){
    param(
        [Parameter(Mandatory=$true)][String]$file,
        [Parameter(Mandatory=$true)][String]$key,
        [Parameter(Mandatory=$true)][String]$value
    )
    $content = get-content $file | ForEach-Object { 
        IF($_ -eq $key){"$key $value"} 
        ELSE {$_}
    }
    $content | Set-Content $file
}

Then just call the Function with:

AddSomeData settings.conf 'I work very' 'hard'

answered Jul 4, 2014 at 3:17

Erik Blomgren

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Bill_Stewart · Accepted Answer · 2014-07-03 17:30:50Z

1

You can use a regular expression to search and replace on each line and then output to a new file. For example:

get-content "settings.conf" | foreach-object {
  $_ -replace 'I work very$','$0 hard'
} | out-file "settings2.conf"

answered Jul 3, 2014 at 17:30

Bill_Stewart

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