Concat Variable (date) and String in shell unix - bash

Question

I'm trying to concat a var (date) and string to have a file with current date name.

My code.

days="$(date +"%Y%m%d_%H%M")"
echo "SKIP" > ${days}_EMERGENCY.txt

but when I run, I get a file with a ? in file name, like this:

Am I doing something wrong?

EDIT

Looking at symbol, ? stands for \r - could it be because I'm writing on notepad and then upload via ftp the .sh script?

EDIT 2

Tried with vi on local machine - now it's also worse.

Answer 1

I guess your vi will have made the entire file DOS-style and so there will be another carriage return at the end of the echo statement

Try dos2unix or using an editor that allows you to change the line-ending style or

sed -i "s/$( printf '\015' )//g" yourscript