linux language please uestion1 In this case, you will use functions, looping str

Question

linux language please

uestion1 In this case, you will use functions, looping structures, arrays, decision statements, calcu- lations, and other commands necessary to complete the following tasks: 1. Use an array to hold a student record with a name and three grades, for example: "Maude Tedders":100:88:90 2. Use the necessary commands to cut the fields into the name and grades fields 3. Use another array to contain the three grades. For example: Grade[ 1]-necessary statements to get the first grade Grade[ 2]-necessary statements to get the second grade Grade [3]=necessary statements to get the third grade 4. Take a numeric average of the three grades. 5. Convert the numeric average to a letter grade using this scale: A is 90 to 100 B is 80 to 89 C is 70 to 79 D is 65 to 69 F is 0 to 64 6. For each student record, display the student name, numeric average, and letter grade. 7. You must implement at least one function within the script. Create a file that contains at least five student records. Make them up. Provide the program output to demonstrate that your script works

Explanation / Answer

I am attaching two files. One of them contains the data and another has shell script.

=[myScript.sh]==============

#!/bin/sh

myfunc()
{
avgMarks=`echo "$@"| awk '{print ($1+$2+$3)/3}'`
grade=`echo "$avgMarks"| awk '{if($1>=90) print "A"; else if($1>=80) print "B"; else if($1>=70) print "C"; else if($1>=65) print "D"; else print "F" }'`
}

while read -r line
do
    avgMarks=0
    grade='A'
    studName=`echo $line | awk 'BEGIN{FS=":"}{print $1}'`
    marks=`echo $line | awk 'BEGIN{FS=":"}{print $2,$3,$4}'`  
    myfunc $marks
    echo "Name: "$studName" Average Marks: "$avgMarks " Grade: "$grade
done < "studMarks.txt"

==[studMarks.txt]=================

Maude Tedders: 100:88:90
Maude Tedders2: 90:96:75
Maude Tedders3: 50:38:70
Maude Tedders4: 50:86:63
Maude Tedders5: 89:45:87

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