Challenge Lab: Each Challenge Lab is worth $20$ points.

$1)$ Create a script called week$9.$sh with a text editor.

$2)$ You MUST make the script file week$9.$sh executable.

$3)$ Your script MUST use a #$!/$bin$/$bash or #$!/$bin$/$sh as the first line of the script to

determine what shell is to be used to execute the script.

NOTE: If your script does NOT execute, check your PATH environment variable. It

should have been updated in Week $3$ Lab $1$ of the semester.

$4)$ Fully comment the script where needed.

$5)$ Your output file will be called week$9$ch$.$out.

$6)$ You MUST have a function in the week$9.$sh script to display your student header

information in the week$9$ch$.$out file using $>$ and $>>$ to redirect the output and

information shown below. Example:

$*******************************************$

$*$ Brent Fulton

$*$ Username: student name show using one of the methods learned

$*$ Date: current date and time using $`$date$`$

$*$ Assignment: Week $9$ Challenge Lab

$*******************************************$

$7)$ Make sure the output is neat and use extra echo commands to insert lines into the

output for easier reading.

$8)$ Use blank lines in the script for easier reading in the script as well.

$9)$ The script should perform, complete, and show the following information:

a$.$ Function in script should show the student header information as discussed above

in the week$9$ch$.$out file.

b$.$ Use the echo commands below to create a visual separator in the week$9$ch$.$out

file.

echo $>>$ week$9$ch$.$out

echo $>>$ week$9$ch$.$out

c$.$ Your script must clear the screen and ask for a directory name to create. $($This will

NOT appear in the week$9$ch$.$out file, only on the screen$)$ Read in the response

and use that variable with the mkdir command for the following item.

d$.$ Create a directory using the directory name from above.

e$.$ Use the cd command to change to the directory name from above.

f$.$ Use the touch command to create $3$ files called file$1,$ file$2$ and file$3.$

g$.$ Change the permissions on the files as follows:

file$1600$

file$2622$

file$3700$

h$.$ Set the Sticky Bit on file$1.$

i$.$ List the directory files in reverse alphabetical order AND use the long listing

format to show all file details and permissions. This MUST be in your

week$9$ch$.$out file.

j$.$ Use the cd command to change back to your home directory.

k$.$ Remove the directory and all files that were created using the variable that

contains the directory name from above.