the file is names. so just use putty commond

Step 14: A pipe for practice. We will used the file names created earlier. Remember that the file has the following contents: Alan Turing Alan Turing Ken Thompson Alan Turing Alan Byron Ken Byron Ada Byron Develop a single command line that prints the number of distinct last names in the above file on the screen. The output should be 3 in this example. Once you get the command line ready, copy it into the file cmd14'. Note that this file must contain the actual command line, not the output of the command. In order to write a pipeline command (or pipe' for short) have in mind that this is done by connecting several commands with the pipe symbol '1. This was mentioned in class. The first command should probably include the file name since it will be reading from the file and writing to the standard output. The next command will read this output as its input, so it does not need a file to specified. Each next command will also read output of the previous command and will not need a file name to be specified. If you want to test the command that you wrote in the file, you can do it using the command: source cmdl 4