Liuw’s Thinkpad

In fact, a ‘^M’ in text file is a carriage return (CR), often introduced by DOS text file format. It’s possible to do a simple substitution to get rid of it.

Easiest way is to use a dedicated tool called `dos2unix’, and yes, there is a corresponding tool called `unix2dos’.

Or, we can use Vim/Emacs to convert it.

(first open file with Vim)
:set ff=unix
:set ff=dos

Or use Vim command line switches.

$ vim +"set ff=unix" +wq $DOS_FILE

In Emacs, just do a substitution. Use C-q C-m to input ^M.