mohammadne

Software Engineering

Database

• Database Internas

Architecture

• Microservice Patterns (manning)
• Clean Architecture (uncle bob)

ekreutz

Ansible variable precedence

Source: http://docs.ansible.com/ansible/latest/playbooks_variables.html#variable-precedence-where-should-i-put-a-variable

From least to most important

• command line values (for example, -u my_user, these are not variables)
• role defaults (defined in role/defaults/main.yml)
• inventory file or script group vars
• inventory group_vars/all

joshbuchea

Semantic Commit Messages

See how a minor change to your commit message style can make you a better programmer.

Format: <type>(<scope>): <subject>

<scope> is optional

Example

orimanabu

# virsh qemu-monitor-command DOMAIN '{"execute": "query-commands"}' --pretty 
# virsh qemu-monitor-command DOMAIN --hmp 'help'

# virsh qemu-monitor-command instance-00000002 '{"execute": "query-status"}'
{"return":{"status":"running","singlestep":false,"running":true},"id":"libvirt-5137"}

# virsh qemu-monitor-command instance-00000002 '{"execute": "query-status"}' --pretty 
{
  "return": {
    "status": "running",

hauthorn

[Desktop Entry]
Categories=Development;
Comment=Supercharge your API workflow
Exec="/home/hauthorn/Programs/Postman/Postman"
Icon=/home/hauthorn/Programs/Postman/app/resources/app/assets/icon.png
Name=Postman
Terminal=false
Type=Application
Version=1.0

htp

curl --include \
     --no-buffer \
     --header "Connection: Upgrade" \
     --header "Upgrade: websocket" \
     --header "Host: example.com:80" \
     --header "Origin: http://example.com:80" \
     --header "Sec-WebSocket-Key: SGVsbG8sIHdvcmxkIQ==" \
     --header "Sec-WebSocket-Version: 13" \
     http://example.com:80/

nerdalert

Linux NetFilter, IP Tables and Conntrack Diagrams

IPTABLES TABLES and CHAINS

IPTables has the following 4 built-in tables.

1) Filter Table

Filter is default table for iptables. So, if you don’t define you own table, you’ll be using filter table. Iptables’s filter table has the following built-in chains.

simonista

" Don't try to be vi compatible
set nocompatible

" Helps force plugins to load correctly when it is turned back on below
filetype off

" TODO: Load plugins here (pathogen or vundle)

" Turn on syntax highlighting
syntax on

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname