Many time it happens that when you open a file  in vi editor  you see  a ^M character  at some places in  a file and a  ^M  character is nothing but a carriage return character in Linux.

You normally found those characters when you transfer a file from  a windows machine to a Linux box.

The   ^M character [Carriage Return] can easily be removed by following  one of the below method  ::
Continue reading How to remove ^M characters from a file