In this chapter, you have learned about using the more, less, head, and tail commands, and text processing tools such as cut, paste, comm, and uniq. You also have learned what standard input, standard output, and standard errors are. Finally, you have learned about meta-characters, and pattern matching using vi and grep. In the next chapter, you will learn about analysing the shell interpretation of commands, and you will learn about working with command substitution, command separators, and pipes.
