simonw

How to recover lost Python source code if it's still resident in-memory

I screwed up using git ("git checkout --" on the wrong file) and managed to delete the code I had just written... but it was still running in a process in a docker container. Here's how I got it back, using https://pypi.python.org/pypi/pyrasite/ and https://pypi.python.org/pypi/uncompyle6

Attach a shell to the docker container

Install GDB (needed by pyrasite)

apt-get update && apt-get install gdb

lawrenceakka

# -*- coding: utf-8 -*-
"""Demo to add a music service track or album to a queue."""
from __future__ import unicode_literals

from soco import SoCo
from soco.data_structures import DidlItem, DidlResource
from soco.music_services import MusicService
from soco.compat import quote_url

jimbaker

plugins {
  id 'java'
  id 'com.github.johnrengelman.shadow' version '1.2.2'
}

apply plugin: 'idea'
apply plugin: 'scala'
apply plugin: 'com.github.johnrengelman.shadow'

version = 0.1

kristopolous

// Usage:
//   Copy and paste all of this into a debug console window of the "Who is Hiring?" comment thread 
//   then use as follows:
//
//   query(term | [term, term, ...], term | [term, term, ...], ...)
// 
// When arguments are in an array then that means an "or" and when they are seperate that means "and"
//
// Term is of the format:
//    ((-)text/RegExp)  ( '-' means negation )

adewes

To use this bot:

• Download ads_bot.py and requirements.txt.
• Type pip install -r requirements.txt to install the requirements.
• Fill out the required information in the Python file.
• Ideally, create a (free) Slack account and set up a web hook to receive notifications from the bot.
• Run the script :)
• Relax and be ready to answer incoming calls :D

matthewmueller

# OSX for Hackers (Mavericks/Yosemite)
#
# Source: https://gist.github.com/brandonb927/3195465

#!/bin/sh

# Some things taken from here
# https://github.com/mathiasbynens/dotfiles/blob/master/.osx

# Ask for the administrator password upfront

noahlz

Troubleshooting Production JVMs with jcmd

jcmd is a powerful new tool introduced in Java 7. Along with jstack and jps, it should be in your go-to tool for solving production problems on the JVM. (Come to think of it, with this tool you don't really need jps anymore)

Here's an example session with jcmd:

$ ssh wopr.qa.corp.local
$ jcmd -l
34739 sun.tools.jcmd.JCmd -l

thaJeztah

#!/usr/bin/env perl

use feature 'switch';
use strict;
use warnings;

use Data::Dumper;
use File::Basename;
use File::Copy;
use File::Path qw/make_path/;

wolfdancer

Summary

This is a step-by-step instruction to manually set up Cloud Monitoring through the server-side configuration feature to get familiar with the process. The target use case for this is for automation like Chef Cookbook, Ansible Playbook or scripts.

In this example, we are going to set up the filesystem check because it is always a good idea to get notified BEFORE you run out of space. We are going to use Ubuntu as the example OS to simplify the steps.

Steps

• Upgrade agent
• Create YAML file

jkreps

Producer

Setup
bin/kafka-topics.sh --zookeeper esv4-hcl197.grid.linkedin.com:2181 --create --topic test-rep-one --partitions 6 --replication-factor 1
bin/kafka-topics.sh --zookeeper esv4-hcl197.grid.linkedin.com:2181 --create --topic test --partitions 6 --replication-factor 3

Single thread, no replication

bin/kafka-run-class.sh org.apache.kafka.clients.tools.ProducerPerformance test7 50000000 100 -1 acks=1 bootstrap.servers=esv4-hcl198.grid.linkedin.com:9092 buffer.memory=67108864 batch.size=8196