indygreg

#!/usr/bin/perl

# This script parses Git blame's "porcelain" output format and
# ascertains the oldest lines of code seen.
#
# If you want to perform a custom report, just define your own callback
# function and invoke parse_porcelain() with it.
#
# The expected input format is slightly modified from raw `git blame
# -p`. Here is an example script for producing input:

MercuryRising

# -*- coding: utf-8 -*-

from math import *
import wolframalpha

client = wolframalpha.Client("YHQ3GK-PT45KT9AHG")
radius = 6367500
circumference = 2*pi*radius
gravitational_constant = 9.8 # m/s2

dtheodor

import select
import datetime

import psycopg2
import psycopg2.extensions

from sqlalchemy import create_engine, text

engine = create_engine("postgresql+psycopg2://vagrant@/postgres")

lrascao

dash_id=xxxx
api_key=xxx
app_key=xxx

# 1. export
curl -X GET "https://app.datadoghq.com/api/v1/dash/${dash_id}?api_key=${api_key}&application_key=${app_key}" > dash.json

# 2. edit dash.json
move "graphs", "title", "description" up one level in the json hierarchy, from being beneath "dash" to being at the same level

ipbastola

JQ to filter JSON by value

Syntax: cat <filename> | jq -c '.[] | select( .<key> | contains("<value>"))'

Example: To get json record having _id equal 611

cat my.json | jq -c '.[] | select( ._id | contains(611))'

Remember: if JSON value has no double quotes (eg. for numeric) to do not supply in filter i.e. in contains(611)

pierrejoubert73

How to add a collapsible section in markdown

1. Example

Click me

Heading

1. Foo
2. Bar
   • Baz

• Qux

ferd

Originally from: http://erlang.org/pipermail/erlang-questions/2017-August/093170.html

For a safe and fast Erlang SSL server, there's a few 
configuration values you might want by default:

    [{ciphers, CipherList},      % see below
     {honor_cipher_order, true}, % pick the server-defined order of ciphers
     {secure_renegotiate, true}, % prevent renegotiation hijacks
     {client_renegotiation, false}, % prevent clients DoSing w/ renegs
     {versions, ['tlsv1.2', 'tlsv1.1']}, % add tlsv1 if you must

posilva

#!/usr/bin/env bash
# Helper commands for clouformation deploy in the EC2 instances
# curl http://169.254.169.254/latest/user-data
# cat /var/log/cloud-init-output.log
# sudo yum install htop tmux tcpdump telnet -y


# describe stack
# this parameters are not passed by command line parameters
# to ensure that the developer does not hit a different STACK NAME or template by mistake

posilva

# References:
#
# https://cinhtau.net/2016/12/09/disable-apt-auto-update-and-upgrade/
# https://unix.stackexchange.com/questions/315502/how-to-disable-apt-daily-service-on-ubuntu-cloud-vm-image
# https://askubuntu.com/questions/824718/ubuntu-16-04-unattended-upgrades-runs-at-random-times/831206

apt-get -y purge update-notifier-common ubuntu-release-upgrader-core landscape-common unattended-upgrades

systemctl kill --kill-who=all apt-daily.service
systemctl kill --kill-who=all apt-daily-upgrade.service

calexandre

#!/bin/bash
# Inspired on https://david-kerwick.github.io/2017-01-04-combining-zsh-history-files/
set -e
history1=$1
history2=$2
merged=$3

echo "Merging history files: $history1 + $history2"

test ! -f $history1 && echo "File $history1 not found" && exit 1