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André Durão andredurao

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andredurao / iptables-cheatsheet.md
Created November 22, 2019 22:08 — forked from mcastelino/iptables-cheatsheet.md
iptables-cheatsheet

The netfilter hooks in the kernel and where they hook in the packet flow

The figure below calls out

  • The netfilter hooks
  • The order of table traversal
@andredurao
andredurao / docker-cheat-sheat.md
Created August 6, 2019 19:04 — forked from dwilkie/docker-cheat-sheat.md
Docker Cheat Sheet

Build docker image

$ cd /path/to/Dockerfile
$ sudo docker build .

View running processes

@andredurao
andredurao / postgres-cheatsheet.md
Created May 3, 2019 18:28 — forked from Kartones/postgres-cheatsheet.md
PostgreSQL command line cheatsheet

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)
@andredurao
andredurao / *nokogiri-commandline-ref.txt
Created March 19, 2018 11:19 — forked from carolineartz/*nokogiri-commandline-ref.txt
nokogiri cheatsheet
require 'nokogiri'
require 'open-uri'
# Get a Nokogiri::HTML:Document for the page we're interested in...
doc = Nokogiri::HTML(open('http://www.google.com/search?q=tenderlove'))
# Do funky things with it using Nokogiri::XML::Node methods...
####
@andredurao
andredurao / spotify_keybindings
Created August 30, 2017 16:26 — forked from jbonney/spotify_keybindings
Spotify - Linux key bindings. From XFCE / Ubuntu keyboard shortcuts configuration, assign the control command to their key. http://shkspr.mobi/blog/2011/12/linux-spotify-keybindings/
"dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.PlayPause" XF86AudioPlay
"dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.Stop" XF86AudioStop
"dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.Next" XF86AudioNext
"dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.Previous" XF86AudioPrevious
@andredurao
andredurao / .colors.csv
Created January 31, 2017 15:13 — forked from avillafiorita/.colors.csv
change osx terminal colors and font from the command line
LightPink1 #ffbdc5 255 189 197 {65535 48573 50629}
pink4 #9d777f 157 119 127 {40349 30583 32639}
pink3 #d7a3ad 215 163 173 {55255 41891 44461}
pink2 #f2b9c4 242 185 196 {62194 47545 50372}
pink1 #ffc3cf 255 195 207 {65535 50115 53199}
HotPink4 #9e4f75 158 79 117 {40606 20303 30069}
HotPink3 #d878a1 216 120 161 {55512 30840 41377}
HotPink2 #f383b5 243 131 181 {62451 33667 46517}
HotPink1 #ff87c1 255 135 193 {65535 34695 49601}
DeepPink4 #9e1e62 158 30 98 {40606 7710 25186}
@andredurao
andredurao / postgres_queries_and_commands.sql
Created December 13, 2016 12:46 — forked from rgreenjr/postgres_queries_and_commands.sql
Useful PostgreSQL Queries and Commands
-- show running queries (pre 9.2)
SELECT procpid, age(query_start, clock_timestamp()), usename, current_query
FROM pg_stat_activity
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
ORDER BY query_start desc;
-- show running queries (9.2)
SELECT pid, age(query_start, clock_timestamp()), usename, query
FROM pg_stat_activity
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'