1
What commands have you used to create the directories  S1 ... S5?

2
What commands do you use to list the contents of a directory? What option do you have to add to display the hidden files?

3
What option do you have to add to ls to see the extended information of the files? Which fields are displayed by default with this option? (If you cannot find the information in the manual, ask your instructor.)

4
Which options of the menu have you activated to extend the information displayed by the File Browser?

5
Which command sequence have you executed to delete a directory, check that it’s not there and create it again?

6
What difference exists between  cat and less?

7
What’s the function of the  –i option in the  cp command? Which is the command to do an alias for the cp command that includes the  –i option? 

8
What does the  –i option of the  rm command? And the  –i option of mv? Write the command to do an alias of the rm command that includes the  –i option.

9
What options of the chmod have you used to leave only write permissions? What was the result of cat when trying to see the test file? What options of the  chmod have you used to leave only read permissions? Have you succeeded in deleting it?

10
Which command line did you run to display the inode information in the test file?

11
How many links does the S1 directory have?

12
What type is each of the links created:  sl_pr and  hl_pr}?

13
What is the number of links in each file? What does this value mean? What inode does each file have?

14
Do you notice any difference in the result of the commands when executed on  sl_pr and when executed on  hl_pr? If there is a difference, explain why.

15
 Do you notice any difference in the result of the commands when executed on sl_pr and when executed on hl_pr? If there is a difference, explain why.

16
Do you notice any difference in the execution of these commands before and after deleting the pr.txt file? If there is a difference, explain why

17
 How can you find out which file systems are mounted on your system and what type they are? Also indicate in which directories they are mounted.

18
How can you find out the number of free inodes on a file system? Which command did you use, and with which options?

19
How can you find out the free space on a file system? Which command did you use, and with which options?

20
What’s the meaning of the environment variables  PATH, HOME and PWD?

21
The PATH variable is a list of directories. What character acts as a separator between directories?

22
Which command have you used to define and check the values of the new variables you have defined? 

23
Which version of  ls has been executed? The system  ls or the one you have just downloaded? Execute the ``which ls'' command to check it.

24
Is the directory where you are in defined in the  PATH variable? What are the implications of that?

25
Which program has been executed? The system  ls or the one you just downloaded? Execute the ``which ls'' command to check it.

26
Which program has been executed? The system ls or the one you just downloaded? Execute the ``which ls'' command to check it.

27
What’s the difference between using  > and  >>?

