Ocean Modeling Discussion

Good afternoon, I'm new using Roms, I was trying to compile roms in windows 10 and I'm having an error when I type this :
./build.bash
And it appears this:
./build.bash: línea 51: error sintáctico cerca del elemento inesperado `$'\r''
'/build.bash: línea 51: ` case "$1"in

I will apreciate if ...