Shell Programming and Scripting

we convert all 'new line' ($) characters to '+' in reality 'flattening' the file like so:

Code:

1
2
3

becomes

Code:

1+2+3+

You notice a 'trailing' '+'? That's last new line. So we suffix the result with '0' - adding '0' to the final. So in our example it becomes:

Code:

1+2+3+0

We pipe the result (using 'echo') into 'bc' to perform the actual math.
yes -trying it would help answering the question

vgersh99, rwuerth

awk '{sum += $1} END {printf "%.2f\n", sum}' file
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echo $(sed -e 's/$/+/' /tmp/cc) 0 | bc

Both command works.

thank you for your help.