itsprdp

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

itsprdp

Note

This tutorial is for Ubuntu & Squid3. Use AWS, Google cloud, Digital Ocean or any services with Ubuntu to follow this tutorial.

Install squid & update

sudo apt-get update
sudo apt-get install squid3
sudo apt-get install apache2-utils

itsprdp

Find the original here article here: Devops Best Practices

DevOps started out as "Agile Systems Administration". In 2008, Andrew Shafer did a talk called "Agile Infrastucture" addressing issues around involving more of the company in the same disciplines as programmers.

In 2009, Patrick Debois created "DevOpsDays" conference to help to bring it to light. However, it wouldn't begin to trend until about 2010, when people would begin to describe it as a standalone discipline.

Today, DevOps goes beyond just developers, systems administration and infrastructure, its about [dev, ops, agile, cloud

itsprdp

Keybase proof

I hereby claim:

• I am itsprdp on github.
• I am itsprdp (https://keybase.io/itsprdp) on keybase.
• I have a public key ASC2hQopTOjPq4pC2JgwuSQcxGXN-rHU8UfyVsMh83lQ4Ao

To claim this, I am signing this object:

itsprdp

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz:

itsprdp

#!/bin/sh
# based on https://gist.github.com/ipedrazas/9c622404fb41f2343a0db85b3821275d

# delete all evicted pods from all namespaces
kubectl get pods --all-namespaces | grep Evicted | awk '{print $2 " --namespace=" $1}' | xargs kubectl delete pod

# delete all containers in ImagePullBackOff state from all namespaces
kubectl get pods --all-namespaces | grep 'ImagePullBackOff' | awk '{print $2 " --namespace=" $1}' | xargs kubectl delete pod

# delete all containers in ImagePullBackOff or ErrImagePull or Evicted state from all namespaces

itsprdp

BookMyShow Notifer

This script notifies the user if the particular show is open for bookings for a specific set of Multiplexes.

MovieCode is extracted from the URL
Ex: https://in.bookmyshow.com/buytickets/geetha-govindam-hyderabad/movie-hyd-ET00078428-MT/20180815
Usage: ./bmsShowNotifier geetha-govindam-hyderabad/movie-hyd-ET00078428-MT INOX 20180815

Setup cron to run every minute:

itsprdp

find . -type d -print0 | xargs -0 du | sort -n | tail -10 | cut -f2 | xargs -I{} du -sh {}

itsprdp

#!/bin/bash

args=( "months ago" "weeks ago" "<none>" )

for arg in "${args[@]}"
do
	echo $arg
	docker rmi -f $(docker images | grep "${arg}" | awk '{ print $3 }')
done

itsprdp

package main

import (
	"log"
	"time"

	"golang.org/x/net/context"
	"google.golang.org/grpc"

	pb "github.com/jzelinskie/grpc/simple"