kostaz

#!/bin/bash
[[ $UID == 0 ]] || { echo "run as sudo to install"; exit 1; }

REPO="https://github.com/BurntSushi/ripgrep/releases/download/"
RG_LATEST=$(curl -sSL "https://api.github.com/repos/BurntSushi/ripgrep/releases/latest" | jq --raw-output .tag_name)
RELEASE="${RG_LATEST}/ripgrep-${RG_LATEST}-x86_64-unknown-linux-musl.tar.gz"

TMPDIR=$(mktemp -d)
cd $TMPDIR
wget -O - ${REPO}${RELEASE} | tar zxf - --strip-component=1

carnal0wnage

From: http://redteams.net/bookshelf/
Techie

    Unauthorised Access: Physical Penetration Testing For IT Security Teams by Wil Allsopp.
    Social Engineering: The Art of Human Hacking by Christopher Hadnagy
    Practical Lock Picking: A Physical Penetration Tester's Training Guide by Deviant Ollam
    The Art of Deception: Controlling the Human Element of Security by Kevin Mitnick
    Hacking: The Art of Exploitation by Jon Erickson and Hacking Exposed by Stuart McClure and others.
    Nmap Network Scanning: The Official Nmap Project Guide to Network Discovery and Security Scanning by Fyodor
    The Shellcoder's Handbook: Discovering and Exploiting Security Holes by several authors

bnagy

GPG / Mutt / Gmail

About

This is a collection of snippets, not a comprehensive guide. I suggest you start with Operational PGP.

Here is an incomplete list of things that are different from other approaches:

• I don't use keyservers. Ever.
• Yes, I use Gmail instead of some bespoke hipster freedom service

grugq

Operational PGP

This is a guide on how to email securely.

There are many guides on how to install and use PGP to encrypt email. This is not one of them. This is a guide on secure communication using email with PGP encryption. If you are not familiar with PGP, please read another guide first. If you are comfortable using PGP to encrypt and decrypt emails, this guide will raise your security to the next level.

scy

Opening and closing an SSH tunnel in a shell script the smart way

I recently had the following problem:

• From an unattended shell script (called by Jenkins), run a command-line tool that accesses the MySQL database on another host.
• That tool doesn't know that the database is on another host, plus the MySQL port on that host is firewalled and not accessible from other machines.

We didn't want to open the MySQL port to the network, but it's possible to SSH from the Jenkins machine to the MySQL machine. So, basically you would do something like

ssh -L 3306:localhost:3306 remotehost

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs