please answer 10-22 using linux the previous questions may help solve 10-22.

1. Switch to a command-line terminal (tty2) by pressing Ctrl+Alt+F2 and log in to the ter- minal using the user name of root and the password of LNXrocks!. 2. At the command prompt, type vi myscript2 and press Enter to open a new file for editing called myscript2 in your home directory. 3. Enter the following text into the myscript file. When finished, save and quit the vi editor. #!/bin/bash echo e "This program adds entries to a family database file. " echo e "Please enter the name of the family member -->\c" read NAME echo e "Please enter the family members relation to you (i.e. mother) - ->\c" read RELATION echo e "Please enter the family members telephone number -->\c" read PHONE echo e "$NAME\t$RELATION\t$PHONE" >> database 4. At the command prompt, type chmod u+x myscript2 and press Enter. Next, type ./myscript2 at the command prompt and press Enter. Answer the questions with information regarding one of your family members. 5. At the command prompt, type cat database and press Enter. Was the entry from Step 4 present? Why?

6. Perform Step 4 several times to populate the database file with entries.

7. At the command prompt, type vi myscript2 and press Enter. Edit the text inside the myscript2 shell script such that it reads: #!/bin/bash echo e "Would you like to add an entry to the family database file? " read ANSWER1 if [ $ANSWER1 = "y" o $ANSWER1 = "Y" ] then echo e "Please enter the name of the family member -->\c" read NAME echo e "Please enter the family members relation to you (i.e. mother)- ->\c" read RELATION echo e "Please enter the family members telephone number -->\c" read PHONE echo e "$NAME\t$RELATION\t$PHONE" >> database fi echo e "Would you like to search an entry in the family database file? " read ANSWER2 if [ $ANSWER2 = "y" o $ANSWER2 = "Y" ] then echo e "What word would you like to look for? -->\c" read WORD grep "$WORD" database fi 8. At the command prompt, type ./myscript2 and press Enter. When prompted to enter an entry into the database, choose y and press Enter. Answer the questions with information regarding one of your family members. Next, when prompted to search the database, answer y and press Enter. Search for the name that you just entered a few seconds ago. Is it there? 9. At the command prompt, type ./myscript2 and press Enter. When prompted to enter an entry into the database, choose n and press Enter. Next, when prompted to search the database, answer y and press Enter. Search for a name that you entered earlier in Step 6. Was it there? Why? 10. At the command prompt, type vi myscript2 and press Enter. Edit the text inside the myscript2 shell script such that it reads: #!/bin/bash echo e "What would you like to do? Add an entry (a) Search an entry (s) Enter your choice (a/s)-->\c" read ANSWER case $ANSWER in a|A ) echo e "Please enter the name of the family member -->\c" read NAME echo e "Please enter the family members relation to you (i.e.mother)- ->\c" read RELATION echo e "Please enter the family members telephone number -->\c" read PHONE echo e "$NAME\t$RELATION\t$PHONE" > > database ;; s|S ) echo e "What word would you like to look for? -->\c" read WORD grep "$WORD" database ;; *) echo "You must enter either the letter a or s." ;; esac

11. At the command prompt, type ./myscript2 and press Enter. Choose y and press Enter. What error message do you receive and why? 12. At the command prompt, type ./myscript2 and press Enter. Choose a and press Enter. Enter information about another family member. Does it matter whether you entered a or A at the prompt earlier? Why? 13. At the command prompt, type ./myscript2 and press Enter. Choose s and press Enter. Search for the family member entered in Step 12. Does it matter whether you entered s or S at the prompt earlier? Why? 14. At the command prompt, type vi myscript2 and press Enter. Edit the text inside the myscript2 shell script such that it reads: #!/bin/bash while true do clear echo e "What would you like to do? Add an entry (a) Search an entry (s) Quit (q) Enter your choice (a/s/q)-->\c" read ANSWER case $ANSWER in a|A ) echo e "Please enter the name of the family member -->\c" read NAME echo e "Please enter the family members relation to you (i.e. mother)- ->\c" read RELATION echo e "Please enter the family members telephone number -->\c" read PHONE echo "$NAME\t$RELATION\t$PHONE" > > database ;; s|S ) echo "What word would you like to look for? -->\c" read WORD grep "$WORD" database sleep 4

;; q|Q ) exit ;; *) echo "You must enter either the letter a or s." sleep 4 ;; esac done 15. At the command prompt, type ./myscript2 and press Enter. Choose a and press Enter. Enter information about another family member. Does the menu appear again after you were finished? Why? Choose s and press Enter. Search for the family member that you just entered. Choose q to quit the shell script. 16. At the command prompt, type vi myscript3 and press Enter to edit a new file called myscript3 in your home directory. 17. Enter the following text into the myscript3 file. When finished, save and quit the vi editor. #!/bin/bash echo e "This program copies a file to the /stuff directory. " echo e "Which file would you like to copy? -->\c" read FILENAME mkdir /stuff || echo "The /stuff directory could not be created." cp f $FILENAME /stuff && echo "$FILENAME was successfully copied to / stuff" 18. At the command prompt, type chmod u+x myscript3 and press Enter. Next, type ./myscript3 at the command prompt and press Enter. When prompted for a filename, type /etc/hosts and press Enter. Was the /stuff directory created successfully? Why or why not? Was the /etc/hosts file copied successfully to the /stuff directory? Why or why not? 19. Type ./myscript3 at the command prompt and press Enter. When prompted for a filename, type /etc/inittab and press Enter. Was the /stuff directory created suc- cessfully? Why or why not? Was the /etc/inittab file copied successfully to the /stuff directory? Why or why not? 20. At the command prompt, type vi myscript4 and press Enter to edit a new file called myscript4 in your home directory. 21. Enter the following text into the myscript4 file. When finished, save and quit the vi editor. #!/bin/bash echo "These are the scripts that you have created previously:" ls l myscript myscript2 myscript3 sleep 2 echo "This script will now change the permissions on each script such that the root user has exclusive rights only." sleep 3 for FILE in myscript myscript2 myscript3 do chmod 700 $FILE done echo "The new permissions are listed below:" ls l myscript myscript2 myscript3

22. At the command prompt, type chmod u+x myscript4 and press Enter. Next, type ./myscript4 at the command prompt and press Enter. Were the permissions changed to rwx------ for myscript, myscript2, and myscript3?