Windows Powershell code numerical sequential increments for variables

Question

I'm a (very new) beginner with powershell and need help inputting a code that will add a comma and numerical increment to each line of output which would be a random number. The output is displayed in a file.

$file = "path to file"


for ($i=0; $i -le 4; $i++) {
    $a = Get-Random -Minimum 10 -Maximum 50
    Add-Content $file $a.ToString("0")
}

so the output of this would be 1 line for each random number such as:

12
30
22
41.. etc

I'd like it to look like this:

1,12
2,35
3,22
4,41

Can anyone please provide a code that would make this happen? any help would be much appreciated.

mklement0 · Accepted Answer · 2018-07-07 03:48:33Z

2

I suggest a more PowerShell-idiomatic solution that uses the pipeline (|):

1..4 | ForEach-Object { '{0},{1}' -f  $_, (Get-Random -Min 10 -max 50) } | Set-Content $file

1..4 uses the range operator (..) to create an array of integers from 1 to 4, inclusively.
ForEach-Object invokes the associated script block ({ ... }) for each input object (integer in this case) represented as automatic variable $_:
- '{0},{1}' -f $_, (Get-Random -Min 10 -max 50) uses the the string-formatting operator (-f), whose LHS is a format string containing positional placeholders for the RHS values ({0} is placeholder for the 1st argument, ...), to produce an output string containing the integer at hand, followed by comma and the random number.
Set-Content saves all strings it receives to output file $file (using the default character encoding, which in Windows PowerShell is the "ANSI" encoding implied by the legacy system locale; use parameter -Encoding to change that).

answered Jul 7, 2018 at 3:48

mklement0

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2 Comments

user6811411 Over a year ago

I was about posting the short version 1..4|%{"{0},{1}" -f $_,(Get-Random -Min 10 -max 50)}|sc $file (to be accompanied by the long one) before I scrolled down and saw your answer. ;-)

mklement0 Over a year ago

@LotPings :) On a side note: alias sc was removed from PowerShell Core.

Evandro de Paula · Accepted Answer · 2018-07-07 02:52:21Z

1

Try this:

$file = "C:\Temp\test.txt"
for ($i=1; $i -le 5; $i++) {
    $a = Get-Random -Minimum 10 -Maximum 50
    $line = $i.ToString() + "," + $a.ToString()
    Add-Content $file $line
}

edited Jul 7, 2018 at 2:52

answered Jul 7, 2018 at 2:45

Evandro de Paula

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