Math from a file.txt

November 26, 2021

    $space =("`r`n")
    $data = @(Get-Content C:\Users\user1\Desktop\ma.txt)
    $Array = ($Data.Split($space)).Split($space)
    $pos1 = $Array[0][0]+$Array[0][1]
    $pos2 = $Array[1][0]+$Array[1][1]
    $pos3 = $Array[2][0]+$Array[2][1]
    #$pos1
    #$pos2 
    #$pos3
    $zahl1 = $Array[0][5]+$Array[0][7]+$Array[0][9]
    $zahl1

PowerShell 7.2

txt1.txt has the text:

x1 = 2 + 3

x2 = 8 / 4

x3 = 1 – 4

i want the results (from x1,x2,x3) to be saved at txt2.txt with a command in Terminal.
I tried whith Arrays,
but i only get :2+3 instead of 5

Any thoughts?

>Solution :

You could use Invoke-Expression for this, but read the warning first

Get-Content -Path text1.txt | Where-Object {$_ -match '\S'} | ForEach-Object {
    $var,$calculation = ($_ -split '=').Trim()
    '{0} --> {1}' -f $var, (Invoke-Expression -Command $calculation)
} | Set-Content -Path text2.txt