How do you write lifecycle configurations for SageMaker on windows?

I'm trying to set up a startup lifecycle configuration for a SageMaker sketchbook (which just ends up being a .sh file), and it seems like, regardless of what I do, my notebooks timeout on startup. I simplified everything as much as possible, to the point of commenting out all but #!/bin/bash, and I still get a timeout. Checking cloudwatch this shows up in the log:

/bin/bash: /tmp/OnStart_2020-08-11-07-01jgfhhkwa: /bin/bash^M: bad interpreter: No such file or directory

through testing, I also found that if I add a carriage return before #!/bin/bash I get this in the log:

/tmp/OnStart_2020-08-11-06-444y3fobzp: line 1: $'\r': command not found

based on this on the \r error, and this on the ^M error, this seems to be an incompatibility between windows and unix formatted text. However, I'm editing the lifecycle configuration through aws on my windows machine:

is there some way that I can edit this field on my windows machine through AWS, but it be properly written in unix on the other end?

This is, indeed, to do with special character representation in different os' based on this you can use notepad++ to easily convert the dos representation a unix representation, then just "paste as plain text", and it works fine

• copy to notepad++ view
• show symbol
• show all symbols
• replace "/r" with nothing CRLF should become LF which is valid in unix
• copy and paste as plain text

Doing this fixed the problem