Splitting a txt file into multiple by file size

That can of course be done in Powershell; the question is how you want the file split.
Exactly at the given block size, or rather at the end of a line?
If line based:
- Will the lines always be shorter than your chosen block size?
- What is the program using as EOL - the usual <CR><LF> or something else?

Hi, id like to have the file split at the end of the line when the file size is, lets say 3.9mb -- so, I guess it would be split based on both file size and end of line.

The EOL has carriage return, line feed - so, <CR><LF> is correct.

Here is a simple PowerShell function which you can use to split file. Check and see if it works for you..

Function Split-File ($DestPath,$Inputfile,$Size){
Begin{
	$count = 1
	$FileData = GI $Inputfile
	$Outputname = "$DestPath\$($FileData.BaseName)"
	$NewFile = "$Outputname`_$count$($FileData.Extension)"
	New-Item $NewFile -ItemType File -Force | Out-Null
	Write-host "Writing file $NewFile"
}
Process{
Get-Content $Inputfile | % {
  If ((GI $NewFile).Length -ge $Size) {
		$count++
		$NewFile = "$Outputname`_$count$($FileData.Extension)"
		Write-host "Writing file $NewFile"
		Add-Content $_ -Path $NewFile
  }Else{
	Add-Content $_ -Path $NewFile
   }
 }
}
}
#Run Function..
Split-File -DestPath C:\temp\testing -Inputfile C:\Temp\Test.txt -Size 4MB

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Okay - so first question, how can we have it just run any text file in the folder? I wont know the name of the file until its there and am trying to automate the entire process.  Also, I tried running the bat file with the below but it just opened and closed - tried adding a couple different commands at the end to pause the script to view the errors but none of them worked...

Function Split-File ($DestPath,$Inputfile,$Size){
Begin{
      $count = 1
      $FileData = GI $Inputfile
      $Outputname = "$DestPath\$($FileData.BaseName)"
      $NewFile = "$Outputname`_$count$($FileData.Extension)"
      New-Item $NewFile -ItemType File -Force | Out-Null
      Write-host "Writing file $NewFile"
}
Process{
Get-Content $Inputfile | % {
  If ((GI $NewFile).Length -ge $Size) {
            $count++
            $NewFile = "$Outputname`_$count$($FileData.Extension)"
            Write-host "Writing file $NewFile"
            Add-Content $_ -Path $NewFile
  }Else{
      Add-Content $_ -Path $NewFile
   }
 }
}
}
#Run Function..
Split-File -DestPath "\\server-win-sv05\data\divisions\COL\Col\MVP\MVP_Website_Uploads\bat_test" -Inputfile "\\server-win-sv05\data\divisions\COL\Col\MVP\MVPWebsite_Uploads\bat_test\NC13_20161012.txt" -Size 4MB

It's PowerShell script so you need to save it as .ps1 file and run it from PowerShell console.. Following articles will help you..
How to Run a PowerShell script
http://ss64.com/ps/syntax-run.html
Run PowerShell Scripts from Task Scheduler
https://community.spiceworks.com/how_to/17736-run-powershell-scripts-from-task-scheduler

To split all files in a directory you can change last line to..

GCI "\\server-win-sv05\data\divisions\COL\Col\MVP\MVPWebsite_Uploads\bat_test\*.Txt" | %{Split-File -DestPath "\\server-win-sv05\data\divisions\COL\Col\MVP\MVP_Website_Uploads\bat_test" -Inputfile $_.FullName -Size 4MB}

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Okay - so this cannot be run from a bat file?

I tried running this and it froze at the line where its writing the file..

PS Microsoft.PowerShell.Core\FileSystem::\\server-win-fs05\data\divisions\COL\Col\MVP\MVP_Website_Uploads\bat_test> . .\split.ps1
Writing file \\server-win-fs05\data\divisions\COL\Col\MVP\MVP_Website_Uploads\bat_test\NC13_20161012_1.txt

Yes you can run the PowerShell script from bat file..
For example.. You can save the PowerShell code in to a file named Splitfile.ps1 in C:\Script folder..
and use the following code in bat file to execute it..

@ECHO OFF
Powershell.exe -ExecutionPolicy Bypass -Command C:\Script\Splitfile.ps1
PAUSE

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Nevermind.. typo in my path... so that worked, although a lot slower than I thought it would... i guess I could just make a bat file to execute the ps1 file ,right?

okay, great - thanks

It's slow, because it's directly writing to file share, if it's too much of a burden we can try to save all files in local folder and copy it to share once it's complete splitting. It might work bit faster..

Yeah - can we edit it to first copy to local temp and then move back after? Its been running 5min on a 5,000 kb text file and has only written 650 kb

so what variables do I need to edit here? Just the PSFILE to the ps1 file location?

I see in the bat file its setting the file - but I wont know the file name... should I change to .\*.txt?

nevermind - i get it... the c:\temp is the temporary folder for splitting

appreciate your help!

You're rather sparse with the details required to help you.
Does this file have a completely random name, or are some parts static?
Do you just want to process all files of a specific extension, and/or is the only file of its type in the folder?
Do you want the processed file(s) to end up in the same location as the source, or do you need them in a different directory?
Do you want the file processed/moved (and so renamed with the index) even if it is smaller than the size limit, or can this never happen anyway?