Bad interpreter error – linux shell script

I recently encountered this error after modifying a shell script in Windows then FTPing it to a linux server. When executing the script in SSH, I got the following error:

: bad interpreter: No such file or directory

Apparently there are issues with carriage returns and line feeds CR/LF between windows and linux. A simple perl command fixed the issue.

perl -i -pe's/\r$//;' <filename>