How to get output of function_1 into function_2 in shell scripting?

# function_1 extract lines with word Mark from file.

function_1() {
    file=$1
    grep "Mark" ${file}
}

Suppose output of funtion_1:

• Question 1: Mark :5:
• Question 2: Mark :1:
• Question 3: Mark :3:

Suppose function_2 needs to extract integer from function_1 output to calculate total mark.

How to give output of function_1 to funtion_2?

Answer

Try this code:

FILE_NAME=marks.txt

function_1() {
    echo $(grep "Mark" $1)
}

function_2() {
    var="$@"
    echo $var
    #TODO: extract integers
}

ret=$(function_1 $FILE_NAME)

function_2 ${ret}