Convert files from Dos to Unix and back.

        private void Unix2Dos(string fileName)

        {

            const byte CR = 0x0D;

            const byte LF = 0x0A;

            byte[] DOS_LINE_ENDING = new byte[] { CR, LF };

            byte[] data = File.ReadAllBytes(fileName);

            using (FileStream fileStream = File.OpenWrite(fileName))

            {

                BinaryWriter bw = new BinaryWriter(fileStream);

                int position = 0;

                int index = 0;

                do

                {

                    index = Array.IndexOf<byte>(data, LF, position);

                    if (index >= 0)

                    {

                        if ( ( index > 0 ) && (data[index - 1] == CR ))

                        {

                            // already dos ending

                            bw.Write(data, position, index - position + 1);

                        }

                        else

                        {

                            bw.Write(data, position, index - position);

                            bw.Write(DOS_LINE_ENDING);

                        }

                        position = index + 1;

                    }

                }

                while (index > 0);

                bw.Write(data, position, data.Length - position);

               fileStream.SetLength(fileStream.Position);

            }

        }

        private void Dos2Unix(string fileName)

        {

            const byte CR = 0x0D;

            const byte LF = 0x0A;

            byte[] data = File.ReadAllBytes(fileName);

            using (FileStream fileStream = File.OpenWrite(fileName))

            {

                BinaryWriter bw = new BinaryWriter(fileStream);

                int position = 0;

                int index = 0;

                do

                {

                    index = Array.IndexOf<byte>(data, CR, position);

                    if ((index >= 0) && (data[index + 1] == LF))

                    {

                        // Write before the CR

                        bw.Write(data, position, index - position);

                        // from LF

                        position = index + 1;

                    }

                }

                while (index > 0);

                bw.Write(data, position, data.Length - position);

                fileStream.SetLength(fileStream.Position);

            }

        }