jwalanta

Add the following line in /etc/dnsmasq.conf

dhcp-script=/etc/detect_new_device.sh

Setup sendmail to send email to your text number.

Reference:

• https://wiki.openwrt.org/doc/howto/smtp.client

jult

// .stglobalignore

// These prevent SyncThing from trying to sync data that's locked, constantly changing, going to be thrown out, unimportant, etc.
// Lots of conflicts/issues disappeared using these ignores, but do check to prevent major disappointment!
// *.log and *cache* are in there, just so you know.. but firefox' startupCache and offlineCache will be synced.
// Ignores are case sensitive.
// Put both .stignore and this .stglobalignore in the root of your sync folder(s) (where .stfolder resides)

$RECYCLE.BIN
$WINDOWS.~BT

DavidWells

Aligning images

This is a guide for aligning images.

See the full Advanced Markdown doc for more tips and tricks

left alignment

JoaquimLey

Step 1 - Create a New SSH Key

We need to generate a unique SSH key for our second GitHub account.

ssh-keygen -t rsa -C "your-email-address"

Be careful that you don't over-write your existing key for your personal account. Instead, when prompted, save the file as id_rsa_COMPANY. In my case, I've saved the file to ~/.ssh/id_rsa_work.

Step 2 - Attach the New Key

Dev-Dipesh

ELK (Elasticsearch Logstash Kibana)

Though we're focused more on server setup procedure in this document, I will still give a very brief explanation in laymen terms for ELK. To those who are starting new in this stack, must have already heard of MVC (Model View Controller), so take it like this:

• Model => Elasticsearch (for Storage, Indexing & Search)
• View => Kibana (for DataViz & G-Man, yeah the one in half life 😏)
• Controller => Logstash (For Logs & Filtering)

---

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

mrlojam

/**
 * Using Apache Common Bean Utils.
 */
import org.apache.commons.beanutils.BeanUtils;
import java.util.HashMap;

public class ApacheCommonExample throws IllegalAccessException, 
    InvocationTargetException, NoSuchMethodException {
	
	public HashMap<String,Object> convert(Person person) {

uupaa

Image source

https://gyazo.com/eb5c5741b6a9a16c692170a41a49c858.png

Try resize it!

• ![](https://gyazo.com/eb5c5741b6a9a16c692170a41a49c858.png | width=100)

somandubey

How to increase ulimit in Linux:

• Step 1 (ulimit): open the sysctl.conf and add this line fs.file-max = 65536

    vi /etc/sysctl.conf   
  

  add following at end of file in above file:

    fs.file-max = 65536
  

save and exit.

octocat

#!/bin/sh

git filter-branch --env-filter '

OLD_EMAIL="your-old-email@example.com"
CORRECT_NAME="Your Correct Name"
CORRECT_EMAIL="your-correct-email@example.com"

if [ "$GIT_COMMITTER_EMAIL" = "$OLD_EMAIL" ]
then