From db6a6ecfa350cae29739c59df1210d8f76a479c9 Mon Sep 17 00:00:00 2001 From: Patrick Simianer Date: Thu, 5 Dec 2013 07:56:38 +0100 Subject: init --- avg | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100755 avg (limited to 'avg') diff --git a/avg b/avg new file mode 100755 index 0000000..cc4c0e6 --- /dev/null +++ b/avg @@ -0,0 +1,31 @@ +#!/usr/bin/env ruby + +require 'trollop' + + +def usage + STDERR.write "./avg [-r ] < \n" + exit 1 +end +usage if not [0,2].include? ARGV.size + +opts = Trollop::options do + opt :round, "Number of digits after decimal point.", :type => :int, :default => -1 +end + + +sum = 0.0 +i = 0 +while line=STDIN.gets + sum += line.strip.to_f + i +=1 +end + +avg = sum/i.to_f + +if opts[:round] >= 0 + puts avg.round opts[:round] +else + puts avg +end + -- cgit v1.2.3