Skip to content

Instantly share code, notes, and snippets.

View Abreto's full-sized avatar
🔋
Charging

Abreto Fu Abreto

🔋
Charging
View GitHub Profile
@alexpeattie
alexpeattie / disable-autolinking.md
Created February 7, 2013 07:32
Disable Github-flavored Markdown autolinking

http://example.com

http://example.com

@grenade
grenade / 01-generate-ed25519-ssh-key.sh
Last active May 19, 2025 10:27
generate ed25519 ssh and gpg/pgp keys and set file permissions for ssh keys and config
#!/bin/bash
mkdir -p ~/.ssh
# generate new personal ed25519 ssh keys
ssh-keygen -o -a 100 -t ed25519 -f ~/.ssh/id_ed25519 -C "rob thijssen <[email protected]>"
ssh-keygen -o -a 100 -t ed25519 -f ~/.ssh/id_robtn -C "rob thijssen <[email protected]>"
# generate new host cert authority (host_ca) ed25519 ssh key
# used for signing host keys and creating host certs
@sillygwailo
sillygwailo / extract-ios-wallpaper.md
Last active October 19, 2024 17:11
Extract your iOS wallpaper if the image is not in your Camera Roll
  1. Backup your iOS device to your computer (not iCloud) through iTunes
  2. Download iPhone / iPod Touch Backup Extractor from http://supercrazyawesome.com/
  3. Run the app, and click "Read Backups"
  4. Find the backup you just made
  5. Make an empty directory
  6. Scroll all the way down and highlight "iOS Files"
  7. Extract the iOS files to the directory you made
  8. Visit https://www.dcode.fr/cpbitmap-format
  9. Click "Choose File"
  10. Inside the directory you created, find the iOS Files/Library/Springboard directory.
@kevin-smets
kevin-smets / iterm2-solarized.md
Last active July 16, 2025 04:34
iTerm2 + Oh My Zsh + Solarized color scheme + Source Code Pro Powerline + Font Awesome + [Powerlevel10k] - (macOS)

Default

Default

Powerlevel10k

Powerlevel10k

@jo
jo / js-crypto-libraries.md
Last active May 21, 2025 02:55
List of JavaScript Crypto libraries.

JavaScript Crypto Libraries

List some crypto libraries for JavaScript out there. Might be a bit out dated. Scroll to the bottom.

WebCryptoAPI

http://www.w3.org/TR/WebCryptoAPI/

This specification describes a JavaScript API for performing basic cryptographic operations in web applications, such as hashing, signature generation and verification, and encryption and decryption. Additionally, it describes an API for applications to generate and/or manage the keying material necessary to perform these operations. Uses for this API range from user or service authentication, document or code signing, and the confidentiality and integrity of communications.

@d11wtq
d11wtq / docker-ssh-forward.bash
Created January 29, 2014 23:32
How to SSH agent forward into a docker container
docker run -rm -t -i -v $(dirname $SSH_AUTH_SOCK) -e SSH_AUTH_SOCK=$SSH_AUTH_SOCK ubuntu /bin/bash
@rothgar
rothgar / main.yml
Last active April 28, 2025 04:18
Generate /etc/hosts with Ansible
# Idempotent way to build a /etc/hosts file with Ansible using your Ansible hosts inventory for a source.
# Will include all hosts the playbook is run on.
# Inspired from http://xmeblog.blogspot.com/2013/06/ansible-dynamicaly-update-etchosts.html
- name: "Build hosts file"
lineinfile: dest=/etc/hosts regexp='.*{{ item }}$' line="{{ hostvars[item].ansible_default_ipv4.address }} {{item}}" state=present
when: hostvars[item].ansible_default_ipv4.address is defined
with_items: groups['all']
@tomasinouk
tomasinouk / snat_dnat_advantech.md
Last active May 27, 2025 15:07
examples of SNAT, DNAT with iptables for Advantech, Conel routers, with comments (probably will work on other routers where iptables can be manipulated, care needs to be taken on applying these commands after reboot).

Some examples of SNAT, DNAT with iptables with comments

mainly used in start-up script

How to test 'safely'

When we play with iptables aka firewall we might end up in situation, where we execute rule, which has unforseen impact - lock yourself out. Recovering from this situation is necessity.

How to:

  • Enable reboot via SMS.
  • Test all commands in shell first before putting them into Start-up script. This way the command will be wiped out, when unit is rebooted.

masquarade all outgoing packets to be WLAN0 IP

@angstwad
angstwad / dict_merge.py
Last active December 22, 2024 16:02
Recursive dictionary merge in Python
import collections
def dict_merge(dct, merge_dct):
""" Recursive dict merge. Inspired by :meth:``dict.update()``, instead of
updating only top-level keys, dict_merge recurses down into dicts nested
to an arbitrary depth, updating keys. The ``merge_dct`` is merged into
``dct``.
:param dct: dict onto which the merge is executed
:param merge_dct: dct merged into dct
@schtobia
schtobia / tschroot
Last active June 6, 2025 04:30
Mount /tmp, /dev/pts, /dev/shm and /proc into chroot and change into chroot
#! /bin/sh
[ ! -d "$1" ] && echo "$1 is not a valid directory." && exit 1;
trap "umount \"${1}\"/tmp \"${1}\"/dev/null \"${1}\"/dev/pts \"${1}\"/dev/random \"${1}\"/dev/shm \"${1}\"/dev/urandom \"${1}\"/proc" EXIT INT TERM HUP PIPE &&
mount --bind /tmp "${1}/tmp" && \
mount --bind /dev/null "${1}/dev/null" && \
mount --bind /dev/pts "${1}/dev/pts" && \
mount --bind /dev/random "${1}/dev/random" && \
mount --bind /dev/shm "${1}/dev/shm" && \
mount --bind /dev/urandom "${1}/dev/urandom" && \
mount --bind /proc "${1}/proc" && \