Question $1$:

Write a script called, script$4\_1.$sh that extracts the First Name, Last Name and Adjusted Score columns from files with similar formatting as rand$\_$data.csv$,$ do not assume that you will always be given this particular file as input. Sort the data numerically by Adjusted Score and print the top n scores, where is n is specified on the command line as $$2$ and the filename of the data file is $$1.$

The invocation of your script may look like the following:

$./$script$4\_1.$sh rand$\_$data.csv $3$

Where for the above example, the top $3$ scores are printed.

First Name,Last Name,Adjusted Score

YoYo,Rubics,$90\mathrm{.}21$

Mariko,Sama,$73\mathrm{.}92$

Nakajima,Rocky,$71\mathrm{.}38$

Question $2$:

You suspect a file has been modified, this file is called suspect.txt$.$ You do not have a copy of original file, but you do have the file processed.txt$,$ which was generated from the original unmodified file using a bash filters.

Write a script called script$4\_2.$sh that has the inputs:

$$1,$ the suspect file

$$2,$ the processed file

You may only use the commands you've learned in class so far to solve this problem, so tools like grep, awk, sed cannot be used.

Your script will list the Student numbers that has modified letter grades. Only list each student number once to stdout.

An example invocation would be:

$./$script$4\_2.$sh suspect.txt processed.txt

May have the output:

$2367$

$2126$

$1111$

The order of the student numbers do not matter.

Click here for a hint on how to compare files

Alternative hint

Question $3$

Write a command called script$4\_3.$sh that takes in $1$ parameter $$1,$ which represent the the parent ID$.$ For the parent ID list all the process IDs of its children, and their invocation including the parameters to stdout. Kill all the child process of that parent, without killing the parent.

Example invocation:

$./$script$4\_3.$sh $19155$

May produce the following output:

$19164,$bash $/$tmp$/$test$\_$script$\_1280.$sh $10$

$19165,$bash $/$tmp$/$test$\_$script$\_1280.$sh $21$

$19166,$bash $/$tmp$/$test$\_$script$\_1280.$sh $22$

$19167,$sleep $5$h