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AWK passing output, line by line to variable..

Tarantulus
114 New Member
Hi guys,

ok this is a tough one to explain, but I'll try my best:

I have a CSV file in the format "$date,$val ue"

what I want to do, is work through the file line by line (I guess piping through AWK to get $date and $value), and while $date does not change add $value to a running total $total$i

when $date changes $i increments so $total$i is a new variable ($total1 becomes $total2)

does this make sense and is it possible?

thanks in advance
Jun 11 '08 #1
4 2570
radoulov
34 New Member
Please provide sample input and example of the desired output.
Jun 11 '08 #2
Tarantulus
114 New Member
sample input:

11/01/2008,312
11/01/2008,200
12/01/2008,600

sample output:

total1 = 512
total2 = 600

OR

11/01/2008 - 512
12/01/2008 - 600

Thanks
Jun 11 '08 #3
radoulov
34 New Member
It the date column is sorted:
(use nawk or /usr/xpg4/bin/awk on Solaris)

Expand|Select|Wrap|Line Numbers
  1. awk -F, 'END { print d, t }
  2. !_[$1]++ && d { print d, t; d = t = "" }
  3. { d = $1; t += $2 }' OFS=\\= filename
Jun 12 '08 #4
Tarantulus
114 New Member
Thanks a lot,

I actually worked it out myself (in a much more convoluted way) but your way is much prettier :)
Jun 12 '08 #5

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