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Andrew Cholakian andrewvc

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View wsl2net-fix.ps1
# Attempt to fix broken network in WSL2.0
$guest_ip = bash -c "/sbin/ifconfig eth0 | egrep -o 'inet [0-9\.]+' | cut -d ' ' -f2"
Write-Output "Guest IP IS: $guest_ip"
$gateway_ips = Get-NetIPAddress -InterfaceAlias "vEthernet (WSL)" | select IPAddress
$gateway_ip = $gateway_ips[1].IPAddress
Write-Output "Gateway (local WSL adapter) IP is: $gateway_ip"
bash -c "sudo ifconfig eth0 netmask"
bash -c "sudo ip route add default via $gateway_ip"
andrewvc /
Created Jul 23, 2012
Counting SLOC in clojure is pretty easy since the syntax is so simple.
# Count SLOC
export SLF=`mktemp -t cljsloc`; find src test -name "*.clj" | xargs egrep -v "(^[[:space:]]*$|^[[:space:]]*;)" | cut -d: -f1 > $SLF && echo "Files"; uniq -c $SLF; echo "Total" `cat $SLF | wc -l`; rm $SLF
andrewvc / elasticsearch.conf
Created Oct 3, 2013
Upstart script for elasticsearch on ubuntu.... that actually works. Install the deb, and then run `sudo update-rc.d elasticsearch remove -f` to disable the init script.
View elasticsearch.conf
# ElasticSearch upstart script
description "ElasticSearch service"
start on (net-device-up
and local-filesystems
and runlevel [2345])
stop on runlevel [016]
andrewvc / iptables_rules
Created May 13, 2010
Simple iptables rules presets
View iptables_rules
# Internal interfaces
-A INPUT -i lo -j ACCEPT
#Allow all established traffic
-A INPUT -m state --state ESTABLISHED -j ACCEPT
andrewvc /
Last active Jun 6, 2018
Elastic Search Crash Course for LA Hacker News

#elasticsearch Crash Course!

By Andrew Cholakian

What is elasticsearch?

  1. A way to search... things
  2. A way to search your data in terms of natural language, and so much more
  3. A distributed version of lucene with a JSON API.
  4. A fancy clustered database
View gist:6b13148b3c94c2832afa7ef90955f5c7
filter {
ruby {
code => "io ='message')); enum = io.each_line;; event.set('mydate',; io.close"
View logstash-character-hack.conf
input { generator {} }
filter {
ruby {
# Add a \t (tab) by using its ASCII code (9)
code => 'event.set("message", 9.chr + event.get("message"))'
ruby {
# Make a new field with the tab removed
code => 'event.set("tabless", event.get("message").gsub(9.chr, ""))'
andrewvc / jexec.rb
Last active Aug 8, 2017
JRuby method invocations from java performance tests
View jexec.rb
#!/usr/bin/env ruby
require './logstash-core/build/libs/logstash-core-6.0.0-beta1.jar'
ITERATIONS = 50_000_000
class InterfaceTest
include java.lang.Runnable
def initialize
@i = 1
View gist:aec2ad986eceb0af9196be59e80c9b24
* Batch block
* Exceptions on add_tag
View mini_filter.rb
define_filter :keymapper do
process do |event|
keys = event.get('[keys]')
vals = event.get('[vals]')
next unless keys && vals && !keys.empty? && !vals.empty?
keys.each.with_index do |key,i|
event.set(key, vals[i])
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