Shell Programming Submit a single pdf file that shows the contents of the script
ID: 3930605 • Letter: S
Question
Shell Programming
Submit a single pdf file that shows the contents of the script as specified below.
• Suppose there is file where each line is made up of the first name of a student followed by a score (the first name and score are separated by a space).
• Write a script to do the following tasks.
Accept the name of the file through the first argument (i.e. $1)
Put the first names into an array called names
Put the corresponding scores into an array called scores
Print names and corresponding scores (i.e. output should look the same as the input file)
Calculate the average of all scores, and print it.
Sort the arrays in terms of scores (in ascending order)
Print sorted names and scores.
Find the highest scorer, and print the information.
Find the lowest scorer, and print the information.
Explanation / Answer
The following shell script does the required things that mentioned in the Question.
#!/bin/bash
file = "$1" // Accepting the file name through first argument
declare -a names
declare -a scores
while read line
do
IFS=' ' read -r -a names ,scores <<< "$line" //Split the line on spaces and store them into arrays
done < "$file"
for (i=0;i<${#names[@]};i++)
do
echo "$names[$i] $scores[$i]"
done
average=0
total=0
for var in "${scores[@]}"
do
total = $((total+var))
done
average = (($total/5))
echo $average
declare -a sortedScores
for name in "${names[@]}"
do
echo "$name"
done | sort
for score in "${scores[@]}"
do
echo "$score"
done | sort
echo "The Lowest scorer is ${names[0]}" // Printing the lowest scorer
echo "The highest scorer is ${names[@]}" // Printing the highest scorer
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