Remove ^M (Control-M) characters from a file in Unix

When checking my /etc/multipath.conf file, there was a lot of hidden characters ^M at the end of lines

root@linux:~ # cat -vet /etc/multipath.conf

To remove them, use tr and redirect the output to a new file.

root@linux:~ # tr -d ‘\015’ /tmp/multipath.conf

Check the file and if everything is okay, replace the original file