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Jay R. Wren jrwren

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@pudquick
pudquick / brew.md
Last active April 6, 2024 21:42
Lightly "sandboxed" homebrew on macOS

brew is a bad neighbor

This isn't a guide about locking down homebrew so that it can't touch the rest of your system security-wise.

This guide doesn't fix the inherent security issues of a package management system that will literally yell at you if you try to do something about "huh, maybe it's not great my executables are writeable by my account without requiring authorization first".

But it absolutely is a guide about shoving it into its own little corner so that you can take it or leave it as you see fit, instead of just letting the project do what it likes like completely taking over permissions and ownership of a directory that might be in use by other software on your Mac and stomping all over their contents.

By following this guide you will:

  • Never have to run sudo to forcefully change permissions of some directory to be owned by your account
@moyix
moyix / killbutmakeitlooklikeanaccident.sh
Created February 5, 2022 22:51
Script to inject an exit(0) syscall into a running process. NB: only x86_64 for now!
#!/bin/bash
gdb -p "$1" -batch -ex 'set {short}$rip = 0x050f' -ex 'set $rax=231' -ex 'set $rdi=0' -ex 'cont'
@cobaohieu
cobaohieu / update-gcc.md
Last active April 4, 2024 09:43 — forked from patrickmmartin/PYTHON_DEFAULT.md
update-alternatives for gcc on Ubuntu

Run the following commands as root or user with sudo access to update the packages list and install the prerequisites: To install the Development Tools packages, run the following command as root or user with sudo privileges :

$ sudo apt update
$ sudo apt-get upgrade -y
$ sudo apt-get dist-upgrade -y
$ sudo apt-get install build-essential software-properties-common manpages-dev -y
$ sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y
$ sudo apt-get update -y
@doorbash
doorbash / iptables_load_balance.sh
Created March 28, 2021 02:14
Load balancing using iptables
#!/bin/bash
echo 1 >| /proc/sys/net/ipv4/ip_forward
echo 0 >| /proc/sys/net/ipv4/conf/all/rp_filter
iptables -F
iptables -t mangle -F
iptables -t mangle -X
iptables -t nat -F
iptables -t nat -X
@fffonion
fffonion / setup-dashbutton.py
Created September 28, 2019 22:32
Setting up dash button without Amazon App
import requests
import re
import sys
# Initial work from: https://mpetroff.net/2016/07/new-amazon-dash-button-teardown-jk29lp/
h = requests.Session()
BASE_URL = "http://192.168.0.1"
@jonathantneal
jonathantneal / recovery.sh
Last active November 10, 2023 01:01
Create or update macOS Big Sur (or Catalina, or Mojave) Recovery Partition Without Reinstalling
#!/bin/sh
# Set the macOS installer path as a variable
MACOS_INSTALLER="/Applications/$(ls /Applications | grep "Install macOS")"
MOUNT_POINT="$MACOS_INSTALLER/Contents/SharedSupport"
echo "macOS installer is \"$MACOS_INSTALLER\""
# Set the target disk as a variable
TARGET=$(diskutil info "$(bless --info --getBoot)" | awk -F':' '/Volume Name/ { print $2 }' | sed -e 's/^[[:space:]]*//')
echo "Target disk is \"$TARGET\""
@mohanpedala
mohanpedala / bash_strict_mode.md
Last active May 24, 2024 16:16
set -e, -u, -o, -x pipefail explanation

In a terminal start a server.

$ python -m SimpleHTTPServer 8000

In another terminal set up the cgroups freezer.

@searls
searls / client.js
Created May 13, 2018 14:05
Sometimes I find it handy when I'm developing a single page app to have all front-end errors forwarded to the backend's log (when something doesn't work, I can look in a single terminal window)
const puts = (...anything) => {
fetch("/api/puts", {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify({content: anything})
})
}
@enricofoltran
enricofoltran / main.go
Last active April 1, 2024 00:17
A simple golang web server with basic logging, tracing, health check, graceful shutdown and zero dependencies
package main
import (
"context"
"flag"
"fmt"
"log"
"net/http"
"os"
"os/signal"