1. Suppose we have a file directories.txt where each line contains the name of a directory that we want to create. Our friend proposes that we run cat directories.txt | mkdir into order to do this? Will this command work? If not, how can we change this command to get it to work/could we improve it in any way?

  2. Come up with a general statement about when we need to use the xargs command.

  3. Suppose we want to run Mystery.java and save standard output to a file and have it print standard output to the console. How would we achieve this?

  4. Again, suppose we are running Mystery.java. This time, however, we want standard output and standard error to print to the console, in addition to having all output printed to out1.txt. How would we achieve this?

  5. Suppose we have the intro_survey.csv from the previous homework assignment. Using cut, how many unique answers were there to the question “what is your favorite candy”?

  6. Write a command that would delete all directories, recursively, starting from the current directory. Be careful about where you run this command!!