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Saulo Silva ssilva

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@ssilva
ssilva / DisableEnableNetworkAdapter.ps1
Created November 23, 2012 19:16
How to disable & enable a network adapter on Windows with PowerShell
# Get the network adapter object
$adapter = Get-WmiObject -Class Win32_NetworkAdapter |
Where-Object {$_.Name -eq "TP-LINK Wireless USB Adapter"}
# Disable it
Write-Host -nonew "Disabling $($adapter.Name)... ";
$result = $adapter.Disable()
if ($result.ReturnValue -eq -0) {
Write-Host "Success.";
} else {
@ssilva
ssilva / .vimrc
Last active July 21, 2017 20:48
execute pathogen#infect()
"execute pathogen#helptags()
" Suggested Pathogen plugins
" https://github.com/tpope/vim-commentary.git
" https://github.com/tpope/vim-obsession.git
" https://github.com/tpope/vim-sensible.git
" https://github.com/tpope/vim-markdown.git
" https://github.com/itchyny/lightline.vim
" https://github.com/terryma/vim-multiple-cursors.git
" https://github.com/mhinz/vim-signify
@ssilva
ssilva / bootstrap-vim.sh
Created April 24, 2017 13:17
#!/bin/bash
# Simple, ad-hoc script to quickly bootstrap a fresh Vim install.
echo -n "This will overwrite your .vimrc and plugins. Do you wish to continue [y/N]? "
read answer
if ! echo "$answer" | grep -iq "^y"; then
exit
fi
@ssilva
ssilva / aws-s3-bucket-policy.json
Created August 19, 2017 17:16
{
"Version":"2012-10-17",
"Statement":[{
"Sid":"PublicReadGetObject",
"Effect":"Allow",
"Principal": "*",
"Action":["s3:GetObject"],
"Resource":["arn:aws:s3:::example.com/*"
]
}
@ssilva
ssilva / tricks-and-tips.md
Last active February 20, 2018 18:56

Command-line

Sum of numbers

Pipe to awk '{s+=$1} END {print s}' or paste -s -d+ - | bc (here paste joins the numbers into one line)

vim

  • { extends the selection until the next empty line

Macros

@ssilva
ssilva / coding-style.rst
Created September 4, 2017 17:34
Linux kernel coding style

Linux kernel coding style

This is a short document describing the preferred coding style for the linux kernel. Coding style is very personal, and I won't force my views on anybody, but this is what goes for anything that I have to be able to maintain, and I'd prefer it for most other things too. Please at least consider the points made here.

@ssilva
ssilva / main.c
Last active September 12, 2017 02:12
msgpack neovim c client proof of concept
#include <stdio.h>
#include <unistd.h>
#include <sys/socket.h>
#include <msgpack.h>
/*
* $ NVIM_LISTEN_ADDRESS=127.0.0.1:8888 nvim
*
*/
@ssilva
ssilva / postgres-table-bloat.md
Last active September 25, 2017 01:17

In Postgres, each row has a system column xmin which holds the ID of the first transaction to have visibility over that row. Conversely, the xmax system column holds the ID of last trasaction to have visibility over that row.

DROP TABLE IF EXISTS users;
CREATE TABLE users (name varchar(80)) WITH OIDS;
INSERT INTO users VALUES ('root');
SELECT oid, xmin, xmax, name FROM users;
@ssilva
ssilva / disassembler.c
Last active November 11, 2020 06:24
8080 emulation
#include <stdlib.h>
#include <stdio.h>
// Started from http://emulator101.com/
int disassemble_op(unsigned char *codebuffer, int pc)
{
unsigned char *code = &codebuffer[pc];
int opbytes = 1;
@ssilva
ssilva / gameboy_opcodes.html
Created July 11, 2018 12:51
Mirror of http://pastraiser.com/cpu/gameboy/gameboy_opcodes.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Gameboy (LR35902) OPCODES</title>
<meta http-equiv="content-type" content="text/html; charset=windows-1250">
<style type="text/css"> <!--
table.withborder {
border-width: 1px;
border-style: solid;