Question

How to do the sum in individual line in Linux?

I have one file :

Course Name: Math
Credit: 4
12345 1 4 5 1 1 1 1 1 5 10 1 2 2 20
34567 2 3 4 1 10 5 3 2 5 5 10 20 5
Course Name: English
Credit: 4
12345 1 4 5 1 1 1 1 1 5 10 1 20
34567 4 1 10 5 3 2 5 5 10 20 5

Its output will be come:

Course Name: Math
Credit: 4
12345     55
34567     75
Course Name: English
Credit: 4
12345     51
34567     70

I tried this code:

awk '{for (i=2; i<=NF; i++) {tot += $1}; print $1 "\t" tot; tot =0}' file > file2

The output is like this:

Course Name: 0
Credit: 4
12345     55
34567     75
Course Name: 0
Credit: 4
12345     51
34567     70

Actually I need to display a Course name too (Math and English). I am trying to fix it but I couldn’t. Can you please help?

Answer 1

Try:

awk '/^[0-9]/{for (i=2; i<=NF; i++) {tot += $i}; print $1 "\t" tot; tot =0} !/^[0-9]/' 

This will only sum lines that start with a digit, and simply print those that don’t.