shahzaibalikhan

Take slice of logs by time

zgrep 'T18:' -r $PWD >> /tmp/logs

Print logs (time, request_url, elb status, target_status)

awk '{print $2 "\t" $14 "\t" $9 "\t" $10}' /tmp/logs

Filter logs by 5XX status of ELB

shahzaibalikhan

5 entertaining things you can find with the GitHub Search API

Let's have some command-line fun with curl, [jq][1], and the [new GitHub Search API][2].

Today we're looking for:

• The hottest repositories created in the last week.
• The oldest user accounts with zero followers. (So sad.)
• Issue trends by language.
• Clojure projects defying convention.

shahzaibalikhan

[Unit]
Description=Redis Datastore Server
After=network.target

[Service]
Type=forking
PIDFile=/var/run/redis/redis.pid
ExecStartPre=/bin/mkdir -p /var/run/redis
ExecStartPre=/bin/chown redis:redis /var/run/redis

shahzaibalikhan

Running redis using upstart on Ubuntu

I've been trying to understand how to setup systems from the ground up on Ubuntu. I just installed redis onto the box and here's how I did it and some things to look out for.

To install:

shahzaibalikhan

start on runlevel [2345]  
stop on runlevel [!2345]

respawn  
respawn limit 10 5

setuid ubuntu  
chdir /opt/myAplicacion

env PORT=3000

shahzaibalikhan

description "Server Name
author  "author"

start on (local-filesystems and net-device-up IFACE=eth0)
stop on shutdown

respawn

exec sudo -u ubuntu sh -c "NODE_ENV=production node /var/sites/stuff/app.js >> /var/log/stuff.log 2>&1"

shahzaibalikhan

The Perfect Node / Nginx Server

• Ubuntu 14.10 64 bit
• Node 0.10.x from source
• Nginx from source with SPDY & Pagespeed support

Assumes you're doing everything under /home/ubuntu

OS configuration

shahzaibalikhan

[Unit] 
Description=Our cool Node.js App 
After=network.target 

[Service] 
Type=forking 
Restart=always 
User=fooapp 
ExecStart=/var/appdata/fooapp/node_modules/pm2/bin/pm2 start /var/appdata/fooapp/app.js 
ExecStop=/var/appdata/fooapp/node_modules/pm2/bin/pm2 stop /var/appdata/fooapp/app.js 

shahzaibalikhan

var container = document.querySelector('body');

var observer = new MutationObserver(function(mutations){
  // Do something here
 mutations.forEach(function(mutation) {
      console.log('mutation.type = ' + mutation.type);
      for (var i = 0; i < mutation.addedNodes.length; i++) {
        console.log('  "' + mutation.addedNodes[i].textContent + '" added');
      }
      

shahzaibalikhan

if [ -f /etc/bash_completion ]; then
	    . /etc/bash_completion
fi

xhost +local:root > /dev/null 2>&1

complete -cf sudo

shopt -s cdspell
shopt -s checkwinsize