Issue with tr-d '\n' Unable to Delete Line Break

Hello, this is Nanopore.
This is my first time asking a question.

I'm trying to delete a new line from the txt file, but I'm having a hard time because I can't delete the new line even if I run the following command.

cat input.txt | tr-d'\n'>output.txt

There are no errors, and if you add a new line,
I'm not sure because line breaks are deleted only in that part...

I would like people with similar experience and troubleshooting experience to consult with me.
Thank you for your cooperation.

macos bash

2022-09-30 19:22

1 Answers

Due to historical circumstances, there are three types of line feed codes: CR, LF, and CR+LF.

\r is CR
\n is LF

tr operates in bytes, so tr-d'\n' only removes LF.On the other hand, Windows/MacOS/Unix cross-platform tools can accept any of three new line breaks.If you delete only the LF from the CR+LF line feed file originally created in Windows, the tool may treat the single CR as a line feed normally.

# If you use cygwin, you will have to mix Unix-derived LF line breaks and MS-DOS-derived CR+LF line breaks, which can cause a lot of trouble.

Removing both CRs and LFs should do what you want.

2022-09-30 19:22

If you have any answers or tips

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