The vi editor is a command-line text editor that is available on most Unix-based systems. It was originally created by Bill Joy for the BSD Unix operating system in the 1970s and has since become one of the most widely used text editors in the Unix/Linux world. The vi editor is a lightweight tool that is designed to run in a terminal environment, making it ideal for editing text files on remote servers or other headless systems. (more…)

Files created in windows when moved to linux will have ^M character at the end of lines when you open the files in Vi editor. To remove the strange characters open the file in Vi editor and type

:%s/.$// 

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