Using Ubuntu, please give me the commands for question 1 using channel rerouting, pipe operator, and filter commands.

for question 2, please explain the behavior of the giving commands

1.) Perform the following tasks. Effectively use channel rerouting, pipe operator and filter commands a) Given any directory, find out all directories in it (including the hidden ones, or not) b) Given any directory, find out the number of all files (including directories, and all hidden items) in it c) Given any directory, find out the number of all hidden items (files and directories) in it d) Take a screenshot (#3-3) of any one step a) to c) which clearly shows the command you use and the result. 2.) Try the following and see what happens. Explains the behavior. a) echo ".". b) echo "hello c) echo hello d) echo "hello(how to display the text as is?) world" world