https://www.elastic.co/kr/downloads/logstash touch logstash_simple.conf input { stdin { } }output { stdout { }} sudo /usr/share/logstash/bin/logstash -f logstash_simple.conf touch logstash.conf input { file { path => "/home/thewavelet/populationbycountry19802010millions.csv" start_position => "beginning" sincedb_path => "/dev/null" }}filter { csv { separator => "," columns => ["Country","1980","..