Padleft function with a sequence number in PowerShell

powershell padright
powershell substring

I need to add a progressive number of fixed length at the beginning of each row in a txt file. For example:

0001 aaaaaaaaaaa
0002 bbbbbbbbbb
0010 gggggggggg

I created a .bat file to run a PowerShell which should solve the problem:

@echo off &setlocal
set "path=C:\Users..."
set "filein=%~1"
set "fileout=%filein%_out"

setlocal EnableDelayedExpansion

call %SystemRoot%\system32\WindowsPowerShell\v1.0\powershell.exe -Command "& {(Get-Content %path%\%filein%.txt) |ForEach-Object {$_.Insert(0,($id++).PadLeft(10,'0'))} |Set-Content %path%\%fileout%.txt}"

But it doesn't work. Probably there's some syntax error.

since you added the [batch-file] tag - here is a pure Batch solution:

@echo off
setlocal enabledelayedexpansion
set count=0
(for /f "delims=" %%A in (input.txt) do (
    set /a count+=1
    set "index=00000!count!"
    echo !index:~-4! %%A

Windows PowerShell: TFM, System.String PadLeft(Int32 System. String ToLower(), Sys ToLowerInvariant Method System. For example, take a look at this sequence: 55 In this example we gave PowerShell two variables: one 79 Windows PowerShell: TFMTM. Summary: Use Windows PowerShell to pad a string to the left. Use the PadLeft method from the String class. Here is an example that uses a triangle as the pad character. The padding will be 9 triangles.

How to add leading and ending zeroes to strings in PowerShell , PadLeft is a string method, not an integer method. For this reason, to add leading zeroes to a number, we must first cast it to a string to make the  Dim str As String str = "BBQ and Slaw" Console.WriteLine(str.PadLeft(15)) ' Displays " BBQ and Slaw". Console.WriteLine(str.PadLeft(5)) ' Displays "BBQ and Slaw". Remarks. A Unicode space is defined as hexadecimal 0x0020. The PadLeft(Int32) method pads the beginning of the returned string. This means that, when used with right-to-left languages, it pads the right portion of the string.

Something like this might workout for you -

$id = 1
$files = Get-Content "\\PathToYourFile\YourFile.txt"
foreach ($file in $files)
    $Padded = $id.ToString("0000000000");
    $file.Insert(0, ($Padded));

Use the ToString() method, instead of PadLeft to add progressive number of fixed length zeroes. That is much simpler and hassle-free. Also, doing the entire operation in PowerShell will be much simpler.

You can also do this in a single line like -

$i = 1
Get-Content "\\PathToYourFile\YourFile.txt" | % { $_.Insert(0, ($i.ToString("0000000000"))); $i++ } | Set-Content ".\NewFileout.txt"

Format Leading Zeros in PowerShell • The Lonely Administrator, I've been working on a question in the forums at and the need arose to create a folder name with a 4 digit number. Left. There is no built in method to return the Left N characters of a string, but we can use .SubString().. To return the leftmost 5 characters, we start at character 0 and count 5 characters:

Here is a pure batch file solution, which does not ignore empty lines and is safe against all characters, even exclamantion marks (!):

@echo off
setlocal EnableExtensions DisableDelayedExpansion

set /A "IDX=0"
> "output.txt" (
    for /F "delims=" %%L in ('findstr /N "^" "input.txt"') do (
        set /A "IDX+=0"
        set "LINE=%%L"
        setlocal EnableDelayedExpansion
        set "IDX=0000!IDX!"
        echo !IDX:~-4! !LINE:*:=!

exit /B

[int] with leading zeroes : PowerShell, I've noticed today that when i enter a number with a leading zero, the [int] Usually you use the ToString method to change the way the int is displayed, like  PowerShell supports a set of special character sequences that are used to represent characters that aren't part of the standard character set. The sequences are commonly known as escape sequences . Escape sequences begin with the backtick character, known as the grave accent (ASCII 96), and are case-sensitive.

Hey, Scripting Guy! How Can I Use Leading Zeroes When , I'd like to use leading zeroes to align the numbers on the decimal point, but We'​ll be presenting Windows PowerShell for VBScripters at 10:00 AM on In step 2, we're going to use the PadLeft method to insert enough blank  Hey, Scripting Guy! I just read your “ using calculated properties ” PowerShell Tip of the Week, and it addresses a problem I recently had. However, when I got to the last step in your article, I realized the file sizes – and my displayed values – are now left-justified. I’d like to use leading zeroes to align the numbers on the

String.PadLeft Method (System), The number of characters in the resulting string, equal to the number of original characters plus any additional padding characters. paddingChar: Char. A Unicode  [int] with leading zeroes Hi I have a script that uses read-host to get information from the user, and then converts that into an integer to do some counting with and also make an array.

Strings - PadLeft, Built-in Functions & Variables Releases - CompareReleaseSequence PowerShell - PSCredential BuildMaster - Set Build Number Strings - PadLeft $PadLeft. Returns a new string that right-aligns the characters in this instance by padding them on the left $PadLeft(Text, Length, [PadCharacter])  When you invest time in creating PowerShell functions, the benefits are as follows: firstly, you can repeat the block of code easily and reliably by calling the Function’s name again and again. Secondly, you can introduce parameters which modify the code, for example, to change a name or a numeric value within the code block.