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Georgi Koemdzhiev georgikoemdzhiev

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View pinetime-bootloader.md

What is a Bootloader?

Think of your Android phone or iPhone... Once in a while the firmware on your phone needs to be updated to support new features or to fix security vulnerabilities.

The phone downloads the new firmware over WiFi or 4G. Then it restarts to install the new firmware.

Remember that firmware is just a program... A program can't possibly overwrite itself while it's running!

We solve this problem by introducing a second program... the Bootloader. When you power on your phone, the first thing it runs is the Bootloader. When the Bootloader finds a new version of the firmware that's stored on the phone, it overwrites the old firmware with the new one. Then it starts the new firmware.

@toricls
toricls / SF-Fargate-Task.md
Last active Apr 29, 2021
Resilient Fargate task scheduling with Step Functions and EventBridge
@tibu
tibu / get-zone.sh
Created Jan 29, 2018
Download zone file in bind format from AWS Route53
View get-zone.sh
#!/bin/bash
# download zone from AWS Route53
zonename=$1
hostedzoneid=$(aws route53 list-hosted-zones | jq -r ".HostedZones[] | select(.Name == \"$zonename.\") | .Id" | cut -d'/' -f3)
aws route53 list-resource-record-sets --hosted-zone-id $hostedzoneid --output json | jq -jr '.ResourceRecordSets[] | "\(.Name) \t\(.TTL) \t\(.Type) \t\(.ResourceRecords[].Value)\n"'
@perfecto25
perfecto25 / resticheat.md
Last active Apr 11, 2022
Restic cheatsheet
View resticheat.md

Restic backup application - commands cheatsheet

Installation & config

  1. add Retic repo
  2. yum install restic

add a Restic credential file to root

vim /root/.restic
@yetanotherchris
yetanotherchris / acl.ps1
Created Nov 15, 2016
Set write permissions on a directory in Powershell for IIS
View acl.ps1
$acl = Get-Acl "C:\Windows\Temp"
$rule = New-Object System.Security.Accesscontrol.FileSystemAccessRule("IIS_IUSRS","Write","Allow")
$acl.SetAccessRule($rule)
Set-Acl "C:\Windows\Temp" $acl
View when-will-web-browsers-be-complete.txt
WHEN WILL BROWSERS BE COMPLETE?
A short exploration into the end game of web browsers.
This article may seem to be about bashing Google but it isn't. It's just about
reflecting on the current state and how much longer we should see ourselves
here.
So what is the Web? Well we can agree the Web is a conglomerate of standards
proposed by the W3C. So what do those standards define?
@meirbon
meirbon / Dell XPS 15 9560 Manjaro Setup instructions
Last active May 3, 2022
Small, quick guide to set up Manjaro on the XPS 15 9560
View Dell XPS 15 9560 Manjaro Setup instructions
# 1. First of all of course get Manjaro:
https://manjaro.org/get-manjaro/
# I recommend using Etcher to copy the image to your USB:
https://etcher.io/
# 2. Before installing make sure:
# - Secure boot is disabled in BIOS
# - Your SSD, HDD or NVME drive is set to AHCI instead of RAID
# - Fastboot should be on Auto or minimal, but this shouldn't matter to much
@premek
premek / mv.sh
Last active May 8, 2022
Rename files in linux / bash using mv command without typing the full name two times
View mv.sh
# Put this function to your .bashrc file.
# Usage: mv oldfilename
# If you call mv without the second parameter it will prompt you to edit the filename on command line.
# Original mv is called when it's called with more than one argument.
# It's useful when you want to change just a few letters in a long name.
#
# Also see:
# - imv from renameutils
# - Ctrl-W Ctrl-Y Ctrl-Y (cut last word, paste, paste)
@kwk
kwk / README.md
Created Oct 1, 2014
Forgot to sign-off commits?
View README.md

No problem,

run

git filter-branch --msg-filter "cat - && echo && echo 'Signed-off-by: Your Name <Your.Name@example.com>'" HEAD~2..HEAD

To sign-off the last two commits.

Then force to push them to the remote repo with the -f option:

@liangzan
liangzan / .Xresources
Created Jan 19, 2012
Xresources for configuring urxvt
View .Xresources
! urxvt
URxvt*buffered: true
URxvt*cursorBlink: true
URxvt*underlineColor: yellow
URxvt*font: xft:inconsolata:size=10:antialias=true
URxvt*depth: 32
URxvt*borderless: 1
URxvt*scrollBar: false
URxvt*loginShell: true
Urxvt*secondaryScroll: true # Enable Shift-PageUp/Down in screen