How to convert DOS line endings to UNIX on a Windows machine

Question

I need to create a file with Linux line endings in a Windows command script.

The closest I can get so far is this PowerShell one-liner:

powershell.exe -Command "Get-ChildItem -File "D:\path\file.sh" | % { $x = get-content -raw -path $_.fullname; $x -replace [char[]](13),'' | set-content -path $_.fullname }"

This is so close to what I want... the fly in the ointment is that it adds an extra CR+LF at the end of the file! Any suggestions for how I can fix this, or alternative techniques? I can't install any additional software such as Cygwin or dos2unix as this is for a locked-down production environment.

Have a look at https://stackoverflow.com/a/19128003/2579220, the last comment mentions Set-Content -NoNewline. — mvw, Jan 11 '18 at 09:59
there are many solutions in the other duplicate that requires no 3rd party tool, did you even read it? like (Get-Content $file -Raw).Replace("`r`n", "`n") | Set-Content $path -Force — phuclv, Aug 07 '21 at 01:36
@phuclv YOU didn't even read the post you're linking to... Firstly, that post is about the inverse operation than what OP is asking. Secondly, the comment precisely before yours already links this question. And this is not the first time I see you doing this. Stop being an absolute jerk to everyone on SO, and start paying attention to what you're interacting with... — adamency, Jun 01 '22 at 17:12
@adamency you don't even know that it's an automatic message from stackexchange when closing questions? And yes it applies for the reverse direction as well, just exchange the replacement strings. Did you even read my previous comment? It was unfortunately messed up due to Markdown in comments but it works correctly — phuclv, Jun 02 '22 at 02:27

score 2 · Answer 1 · answered Jun 01 '22 at 17:32

2

The most elegant solution I could find is:

((Get-Content $file) -join "`n") + "`n" | Set-Content -NoNewline $file

taken from here

answered Jun 01 '22 at 17:32

adamency

376

Not the best solution for large files. Reading, converting and writing line by line is more efficient. – Mehrdad Mirreza Oct 24 '22 at 09:57

score 1 · Answer 2 · edited Oct 30 '20 at 14:41

1

This could be what you need :

powershell.exe -noninteractive -NoProfile -ExecutionPolicy Bypass -Command "& {[IO.File]::WriteAllText('file_lfonly.txt', ([IO.File]::ReadAllText('file_crlf.txt') -replace \"`r`n\", \"`n\"))};"

edited Oct 30 '20 at 14:41

Ramhound

42,708

answered Oct 30 '20 at 14:05

Marwen

11

How to convert DOS line endings to UNIX on a Windows machine

2 Answers2