Hi, I got passed it, but I dont really understand the logic in the command. I start of piping the content in volcanoes.txt into a command called wc (supose it stands for words-characters?). After that I pipe it to cat. Wasnt cat the command used to print out the content inside a certain file ? I dont understand how i can pipe standard output into cat as a standard input being cat a command, not a file or directory. Can someone please help ? I want to understand the logic and procedure in the command chain. Thanksss !