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Sam Ng samqi

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View aws-lightsail-launchscript.sh
sudo timedatectl set-timezone "Asia/Kuala_Lumpur"
# update OS & install necessary stuff
sudo apt update -y && sudo apt install byobu multitail htop iftop screen -y
#vim environment to be windows friendly colorscheme
echo "syntax on
colorscheme desert" > ~/.vimrc
# check date adn time
@samqi
samqi / keybase.md
Created Jun 26, 2019
Keybase Proof
View keybase.md

Keybase proof

I hereby claim:

  • I am samqi on github.
  • I am samqi (https://keybase.io/samqi) on keybase.
  • I have a public key ASD7_P33ddVzD8HeTd0Bjs5VXmVKZrsh6d57Zy_wXAYzSQo

To claim this, I am signing this object:

View devops_best_practices.md

DevOps started out as "Agile Systems Administration". In 2008, Andrew Shafer did a talk called "Agile Infrastucture" addressing issues around involving more of the company in the same disciplines as programmers.

In 2009, Patrick Debois created "DevOpsDays" conference to help to bring it to light. However, it wouldn't begin to trend until about 2010, when people would begin to describe it as a standalone discipline.

Today, DevOps goes beyond just developers, systems administration and infrastructure, its about [dev, ops, agile, cloud, open source and business](https://blogs.the451group.com/opensource/2010/03/03/devops-mixing-dev-ops-agile-cloud-open-source-and-busi

@samqi
samqi / change_db_owner.sh
Created Jun 26, 2018 — forked from gingerlime/change_db_owner.sh
Postgresql - Changing ownership on all tables
View change_db_owner.sh
#!/bin/bash
usage()
{
cat << EOF
usage: $0 options
This script set ownership for all table, sequence and views for a given database
Credit: Based on http://stackoverflow.com/a/2686185/305019 by Alex Soto
View yocto-rpi.sh
# old ref with 12mb image for R Pi https://www.cnx-software.com/2013/07/05/12mb-minimal-image-for-raspberry-pi-using-the-yocto-project/
#########################################################
# 2018 - yocto for R Pi - http://www.jumpnowtek.com/rpi/Raspberry-Pi-Systems-with-Yocto.html
# install dependency on build machine/server
sudo apt install build-essential chrpath diffstat gawk libncurses5-dev texinfo python2.7
#
#get main Yocto project poky layer
git clone -b rocko git://git.yoctoproject.org/poky.git poky-rocko
cd poky-rocko
#get the dependency layers - repositories shouldn’t need modifications other then periodic updates and can be reused for different projects or different boards.
View openvpn-server.sh
#become root and add key
sudo su -
wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg|apt-key add -
echo "deb http://build.openvpn.net/debian/openvpn/stable xenial main" > /etc/apt/sources.list.d/openvpn-aptrepo.list
apt-get update && apt-get install openvpn
#Based Linode Hardened https://www.linode.com/docs/networking/vpn/set-up-a-hardened-openvpn-server/
#require signed HMAC sig file for access
openvpn --genkey --secret /etc/openvpn/server/ta.key
openssl genpkey -genparam -algorithm DH -out /etc/openvpn/server/dhp4096.pem -pkeyopt dh_paramgen_prime_len:4096
View Effective_Engineer.md

Effective Engineer - Notes

What's an Effective Engineer?

  • They are the people who get things done. Effective Engineers produce results.

Adopt the Right Mindsets

@samqi
samqi / awkshortcuts.txt
Last active Jun 27, 2018
use awk to clear first column from history
View awkshortcuts.txt
#use awk to output history commands without the numbers
awk '{print $2,$3,$4,$5,$6,$7}' history.txt >> commands.txt
#get the ip addresses https://www.cyberciti.biz/tips/read-unixlinux-system-ip-address-in-a-shell-script.html
ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1}'
#get private and public IP for linode node via CLI (old version) https://github.com/linode/cli
linode show linodenode| grep ips | awk '{ print $2,$3}'
@samqi
samqi / spectre-meltdown.sh
Created Jan 11, 2018
spectre and meltdown checker
View spectre-meltdown.sh
git clone https://github.com/speed47/spectre-meltdown-checker.git
cd spectre-meltdown-checker/
sudo sh spectre-meltdown-checker.sh
@samqi
samqi / virtualbox.bat
Last active Mar 17, 2020
virtualbox cli command
View virtualbox.bat
# List virtual machines
VBoxManage list vms
"MyVM" {wwwwww-4301-4a7d-8af8-fe02fed00451}
# Start VM in headless mode
VBoxManage startvm MyVM --type headless
# Power off VM
VBoxManage controlvm MyVM poweroff
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