A small perl script to sum the "b" values for each distinct "a" key in a file
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Usage: cat xy.csv | sum-distinct I use this script when counting the response times of a web service per minute. Often I take the access logs, sed/awk/cut the time of day and the milliseconds so that my "x" is the HH:MM and the "Y" is the duration. When done, I have the total duration per minute (sorted lexically). It's perl as I often need to bring this to new servers which often are "bare bones".