Get list of files open by logstash-forwarder

lsfw-open-files.sh

#!/bin/bash

OUTPUT=`lsof -X -c logstash- | egrep -v '\.logstash-forwarder' | egrep -E '[0-9]+r\s+REG' | awk '{print $9}'`
case "$1" in
  'json')
    FILES=`printf ",\"%s\"" \${OUTPUT[@]}`
    echo "{\"open_files\": [${FILES:1:${#FILES}-1}]}"
    ;;
  *)
    for F in "$OUTPUT"
    do
      echo "$F"
    done
    ;;
esac