Sum Numbers from different files

Shell Programming and Scripting
1

Hi All,

I need to print the sum of numbers from different files.

Input files:


file1.out
10
20
30

file2.out
10
20
30

i want the sum of the numbers from each row from each file.
in this example, i desire to get


10+10
20+20
30+30

Any help with awk. Thanks a lot.

2 
awk 'NR==FNR{a[NR]=$1; next}{print a[FNR]+$1}' file1.out file2.out
1 Like
3 
paste -d + file1.out file2.out|bc
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4

Thanks Mirni, how i can do the same for 1000s of files.

---------- Post updated at 03:43 PM ---------- Previous update was at 03:39 PM ----------

Thanks vgersh99. the simple code works. but i have too many files that paste doesn't work.

5

then follow mirni's suggestion with the wild-carded file names:

awk '{print a[FNR]+=$1}END{for(i=1;i in a;i++) print a}' myFiles*
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6

vgersh99's has bug, here is the update:

awk '{a[FNR]+=$1}END{for(i=1;i in a;i++) print a}' myFiles*
1 Like