Dos2unix, remove the ^m from the Linux file

A CPP file written by VS2010 is used under Windows, and you want to put it on Linux for compiling. Discover that each line of code in a file on Linux follows the ^m symbol at the end.

Why does the same file appear differently on Windows and on Linux? The original is due to the DOS editor and the Linux editor on the end of the file line of the carriage return processing inconsistency caused.

For a carriage return definition:
windows:0d0a
unixlinux:0a
mac:0d

Linux is dedicated to two tools that can be used interchangeably with Windows and Linux formats, respectively, Dos2unix and Unix2dos

So, how to remove the ^m at the end of each line of the file in Linux, you can use the following methods:

Execute command on terminal dos2unix filename

Dos2unix, remove the ^m from the Linux file