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linux - Add up a column of numbers at the Unix shell - Stack Overflow
November 19, 2014 at 2:54:22 PM GMT+1 * - permalink -| awk '{total = total + $1}END{print total}'
find . ! -newer /tmp/file2015 -exec ls -l --block-size=M {} \; |cut -d' ' -f5|sed 's/M//'| awk '{total = total + $1}END{print total}'
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http://stackoverflow.com/questions/926069/add-up-a-column-of-numbers-at-the-unix-shell
