1. Find and visit the documentation page of the log package.
2. Use strace(1) to examine hw.go from the previous chapter.
3. If you are on a Mac, try to examine the hw.go executable using dtruss(1).
4. Write a program that gets input from the user and examine its executable file using either strace(1) or dtruss(1).

5. Visit the website of Rust at https://www.rust-lang.org/.
6. Visit the website of Swift at https://swift.org/.
7. Visit the documentation page of the io package at https://golang.org/pkg/io/.
8. Use the diff(1) command-line utility on your own in order to learn how to interpret its output better.
9. Visit and read the main page of write(2).
10. Visit the main page of grep(1).
11. Play with reflection on your own by examining your own structures.
12. Write an improved version of occurrences.go that will only display frequencies that are above a known numeric threshold, which will be given as...