summing according to the column


 
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# 1  
Old 02-28-2008
summing according to the column

I have a text file with two columns
the first column is an integer and the second column is date
how do i sum up the first column according to the date

example
123 jan1
232 jan1
473 jan2
467 jan2
356 jan3
376 jan3
my result should be
355 jan1
940 jan2
732 jan3

how do i accomplish this... i'm a newbie and any kind of help is appreciated
# 2  
Old 02-28-2008
Code:
awk '{ x[$2]+=$1 } END { for (month in x) print x[month], month }' input_file | sort -k2

# 3  
Old 02-28-2008
robotronic u rock.... it worked.
thanks a ton!!
 
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