从命令行获取一组数字的平均值的最快方法是什么？ [英] What's the quickest way to get the mean of a set of numbers from the command line?

问题描述

使用任何你希望在nix系统上找到的工具（事实上，如果你想，msdos也很好），计算一组数字平均值的最简单/最快的方法是，假设你

Using any tools which you would expect to find on a nix system (in fact, if you want, msdos is also fine too), what is the easiest/fastest way to calculate the mean of a set of numbers, assuming you have them one per line in a stream or file?

推荐答案

Awk

awk '{total += $1; count++ } END {print total/count}'

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