Have you ever wondered what a particular file contains? You can find out with the Octal Dump program (called "od"). od prints the contents of a file in any of four unambiguous formats: 8 bit characters, 16 bit words in octal, 16 bit words in decimal, or 16 bit words in hexadecimal. Each line of output begins with an offset in the file (shown in either octal, decimal, or hexadecimal), followed by the 16 bytes that begin at that offset. The data bytes are shown in the format you have selected.
After saving this program in your C:\windows\system32 folder, start a command prompt window and type "od" (without the quotation marks). You will see instructions on how to run the program.