ASCII text files can contain different forms of newlines, depending on which operating system is being used. Converting between these formats is often necessary if you use several operating systems. The flip program will convert the newlines to any format given in the table below:
| Operating System | Newline Character(s) | |
| Microsoft Windows / Windows | 0Dh 0Ah | |
| Unix (e.g., Linux), also Apple OS X and higher | 0Ah | |
Oracle Solaris systems
To convert a Windows file to a Unix file, enter:
dos2unix winfile.txt unixfile.txt
To convert a Unix file to Windows, enter:
unix2dos unixfile.txt winfile.txt
vi
In vi, you can remove carriage return ( ^M ) characters with the following command:
:1,$s/^M//g
Note: To input the ^M character, press Ctrl-v , and then press Enter or return.