At the moment I cooperate with Windows users in writing a big latex file. A few of the editors are not willing to use version control. As result the ones using version control (like me) use diff to integrate the work of others. I am using Linux, like most of the team. So we don't have CRLF at the end of lines. To remove the CRLF in files originating from the Windows users, I use Emacs.
First: Check whether there are CRLF line endings.
$ file foo.tex foo.tex: ISO-8859 English text, with very long lines, with CRLF line terminators
Yes, there are so let's remove them.
emacs -batch -no-site-file foo.tex \ --eval="(set-buffer-file-coding-system 'iso-latin-1-unix)" -f save-buffer
In this command line Emacs is called in batch mode. The -no-site-file argument prevents Emacs from loading init stuff like .emacs. After that the file is loaded and the command set-buffer-file-coding-system is evaluated with the coding-system iso-latin-1-unix. As last step we save the file.
Check if everything is okay now:
$ file foo.tex foo.tex: ISO-8859 English text, with very long lines