most of my development works are done on linux/unix. i use / evaluate a lot of open source projects and some files has ^M when edited from this platform. this is because the file was saved in dos format which uses a different EOL (end of line character).

to overcome this problem, just run this simple unix command:

$ dos2unix <filename>


note that the original file will be overwritten. do a ‘man’ to check options available for this command.

End Of Line

different systems uses different EOL (end of line) characters, which also known as line break or newline.

unix uses ‘\n’. windows uses ‘\n\r’. apple/mac uses ‘\r’.

other EOL conversion commands: unix2dos, mac2unix, unix2mac, mac2dos, dos2mac.