How to print/append row index number on each line in a file in Powershell

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powershell get-content line number
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sapmple.txt as below

row1col1||col2||col2||col3
row2col1||col2||col2||col3
row3col1||col2||col2||col3

expected

0||row1col1||col2||col2||col3
1||row2col1||col2||col2||col3
2||row3col1||col2||col2||col3

I coded like

get-content "C:\sample.txt" | foreach { "[|][|]" + $_ } | foreach { Index  + $_ } | set-content "C:\sample1.txt"

calling the pipe and then respective index, but not working.

Can you please help.


Another thought:

% { $i = 0 } { "$i||$_" ; $i++ }

ForEach-Object, How to print/append row index number on each line in a file in Powershell · Ask Question calling the pipe and then respective index, but not working. Can you  Another simple application of PowerShell ForEach is to loop through the content of a file and append a text to each line. More in examples section of this guide. In this quick guide, I present 2 easy ways you can do this using Get-Content , ForEach loop, and ForEach-Object .


just like this:

$index = 0
Get-Content 'C:\sample.txt' | ForEach-Object { "{0}||{1}" -f $index++, $_ } | Set-Content 'C:\sample1.txt'

If want to prepend leading zeroes to your index so also larger numbers will align (in this example all indices will have 4 digits):

Get-Content 'C:\sample.txt' | ForEach-Object { "{0}||{1}" -f ($index++).ToString("0000") , $_ } | Set-Content 'C:\sample1.txt'

Set-Content, The ForEach-Object cmdlet performs an operation on each item in a collection of There is a -ThrottleLimit parameter that limits the number of parallel scripts running at a time. This example processes the files and directories in the PowerShell {Get-Date} -Process {Out-File -FilePath Events.txt -Append -​InputObject $_. Strings do not have an index property nor does Get-Content create one as far as I know. Get-Content already knows line numbers using ReadCount so keeping a running index is redundant. It does however start counting at one so a small adjustment would need to be made there to match your desire.


What is index in your example? Strings do not have an index property nor does Get-Content create one as far as I know.

Get-Content already knows line numbers using ReadCount so keeping a running index is redundant. It does however start counting at one so a small adjustment would need to be made there to match your desire.

Get-Content C:\temp\text.txt | ForEach-Object {"{0}||{1}" -f ($_.ReadCount - 1),$_}

We use the format operator -f to try and make for easier to edit output string. Simply pipe the output of the foreach-object to its desired output.

How do I get line numbers with PowerShell?, The Get-Content cmdlet uses the Path parameter to specify the Test*.txt files and displays each file's content in the PowerShell console. Example 2: Create a new​  Use one of these commands to append commas to the end of every line in a file, except the last one, and turn the multiple lines into one comma-separated line: $ echo $ (awk 'NR > 1 {print line", "} {line=$0;}END {print $0" "}' FILE) $ paste -d, -s FILE. $ cat file.txt I Love Bash I Love Bash I Love Bash $ echo $ (awk 'NR > 1 {print line


Reading a file line by line, include in one of your Powershell profiles. Function nl { <# .Synopsis Mimic Unic / Linux tool nl number lines .Description Print file content with numbered lines  Your very first line of code reads in the entire file. My suggested code allows you to loop through each row. I don't have time to try and do all the work for you.


How to read text in text files with PowerShell, The basic technique for reading the file line by line applies a for loop like this: If something seemingly goes wrong in such a loop over lines in a file, it is useful to do a print line inside the loop. lines = [] for line in infile: lines.append(line) The reason is that lines holds each line ( number ) as a string, not a float or int that  To get started, get to the Terminal and you’ll want to do the following at the command line prompt: Using cat to Add Line Numbers to a Text File. This is by far the easiest method: cat -n file > file_new. Simply replace “file” with the file name you want to add line numbers to, and change “file_name” to the exported name.


PowerShell For Loop, For Each-Object Loop & Other Loops , PowerShell has many different ways to manage all of these text file types In this instance, the array index number is equal to the text file line  In yesterday’s post, Add, Modify, Verify, and Sort Your PowerShell Array, I discussed adding, modifying, or verifying values in a Windows PowerShell array, and two easy techniques for sorting the array. Find the index of value in an array. The first thing I need to do is create an array that contains a number of random numbers.