tsiege

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!






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MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

Omar-Ikram

//
//  main.m
//  EndpointSecurityDemo
//
//  Created by Omar Ikram on 17/06/2019 - macOS Catalina 10.15 Beta 1 (19A471t)
//  Updated by Omar Ikram on 15/08/2019 - macOS Catalina 10.15 Beta 5 (19A526h)
//  Updated by Omar Ikram on 01/12/2019 - macOS Catalina 10.15 (19A583)
//  Updated by Omar Ikram on 31/01/2021 - macOS Big Sur 11.1 (20C69)
//  Updated by Omar Ikram on 07/05/2021 - macOS Big Sur 11.3.1 (20E241)
//  Updated by Omar Ikram on 04/07/2021 - macOS Monterey 12 Beta 2 (21A5268h)

qrush

dperini

//
// Regular Expression for URL validation
//
// Author: Diego Perini
// Created: 2010/12/05
// Updated: 2018/09/12
// License: MIT
//
// Copyright (c) 2010-2018 Diego Perini (http://www.iport.it)
//

ccraig

#!/bin/bash
target_drive=/Volumes/Clone
if [ -d $target_drive ]; then
  echo "Last backup: " `cat ~/.last_backup`
  sudo echo "And we're off!"
  echo "Started: " `date`
  echo `date` > ~/.last_backup
  sudo time nice -n19 rsync -A -X -H -go --numeric-ids -D --protect-decmpfs -l -rtpx -N --fileflags --force-change --protect-args --delete-before --ignore-errors --filter='._/Users/i/.rsync-filter' // ${target_drive}; bless -folder ${target_drive}/System/Library/CoreServices
else
  echo "${target_drive} is not mounted"

nickfarrow

Modifying FROST Signers and Threshold

FROST's distributed key generation involves N parties each creating a secret polynomial, and sharing evaluations of this polynomial with other parties to create a distributed FROST key.

The final FROST key is described by a joint polynomial, where the x=0 intercept is the jointly shared secret s=f(0). Each participant controls a single point on this polynomial at their participant index.

The degree T-1 of the polynomials determines the threshold T of the multisignature - as this sets the number of points required to interpolate the joint polynomial and compute evaluations under the joint secret.

T parties can interact in order to interpolate evaluations using the secret f[0] without ever actually reconstructing this secret in isolation (unlike Shamir Secret Sharing where you have to reconstruct the secret).

---

levelsio

<?
/////////////////////
// slack2html
// by @levelsio
/////////////////////
//
/////////////////////
// WHAT DOES THIS DO?
/////////////////////
//

so0k

Kubectl output options

Let's look at some basic kubectl output options.

Our intention is to list nodes (with their AWS InstanceId) and Pods (sorted by node).

We can start with:

kubectl get no

chrismccoy

# alias to edit commit messages without using rebase interactive
# example: git reword commithash message
reword = "!f() {\n  GIT_SEQUENCE_EDITOR=\"sed -i 1s/^pick/reword/\" GIT_EDITOR=\"printf \\\"%s\\n\\\" \\\"$2\\\" >\" git rebase -i \"$1^\";\n git push -f;\n}; f"

# edit all commit messages 
git rebase -i --root

# clone all your repos with gh cli tool
gh repo list --json name -q '.[].name' | xargs -n1 gh repo clone