diff options
Diffstat (limited to 'sample')
-rwxr-xr-x | sample | 25 |
1 files changed, 25 insertions, 0 deletions
@@ -0,0 +1,25 @@ +#!/usr/bin/env ruby + +require 'trollop' + + +STDIN.set_encoding 'utf-8' +STDOUT.set_encoding 'utf-8' + +def usage + STDERR.write "./sample --size <n> < <line separated data>\n" + exit 1 +end +usage if ARGV.size!=4 + +opts = Trollop::options do + opt :size, "Sample n% (percentage).", :type => :int +end + + +prng = Random.new(Random.new_seed) + +while line = STDIN.gets + STDOUT.write line if prng.rand(1..opts[:size])==0 +end + |