milesrichardson

You can inherit the environment variables from PID 1 by iterating over the list of null-terminated strings in /proc/1/environ, parsing the first characters up to the first = as the variable name, setting the remaining value as that variable, and exporting it.

The Code Snippet

This works with multiline environment variables, and environment variables with arbitrary values, like strings, including = or JSON blobs.

Paste this in your current terminal session to inherit the environment variables from PID 1:

milesrichardson

capture those packets

run this command on local machine where wireshark is installed (e.g. MacOS)

export raw_pcap="$(mktemp -t pcap-raw)" ; \
echo "Raw pcap: $raw_pcap" ; \
wireshark -k -i <(ssh ubuntu@my-cool-server.example.com '\
  docker run --rm \
 --net container:$(docker ps -qf name=haproxy) \

milesrichardson

# Hopefully it saves you a few minutes looking at the subprocess docs

import os
import subprocess

env = os.environ.copy()

private_key = (
    subprocess.run(
        ["wg", "genkey"],

milesrichardson

#!/usr/bin/env bash

# I got sick of constantly getting the error from spotify that it cannot play
# the current song. It was really annoying to have to quit, open spotlight,
# Type "spot" and accidentally open spotlight system preferences, wait for spotify
# to open, etc...

# This script, on a mac, uses osascript to quit and relaunch spotify and press play

osascript -e 'tell application "Spotify" to quit'

milesrichardson

ChrisJohnsen/tmux-MacOSX-pasteboard#31 (comment)

What happens if you paste (in a pane where you see the problem) while running cat -v? Do you see something like ^[[200~hello world^[[201~? If so, what you are seeing is bracketed paste mode.

You should be able to turn the mode off by running printf '\e[?2004l'

milesrichardson

What you want

• A public fork of a public GitHub repository, say facebook/react
• A private fork of the same public GitHub repository
• Keep both forks always up to date with all branches of the upstream facebook/react repository
• Selectively publish branches from the private fork to the public fork in order to submit pull requests to facebook/react

What you need

• A GitHub account

milesrichardson

# Usage: find_symbol _ZN6icu_608ByteSinkD2Ev
# Output list of files on system where given symbol exists
# Symbol should be formatted as given by output of ldd -r
find_symbol() {
    local symbol="$1"
    shift

    while read -r filename ; do
        readelf -Ws "$filename" 2>/dev/null | grep "$symbol" && echo "$filename" ;
    done < <(find / -type f -name '*.so' -o -name '*.bc' -o -name '*.a')

milesrichardson

docker run -it --rm --privileged --pid=host justincormack/nsenter1

milesrichardson

How to create a previously non-existing mongo database and new user from the nodejs mongodb driver using the admin account.

1. Connect as admin user to new database, using authSource: admin (assuming adminDbName === admin)
2. Create new user

milesrichardson

pairwise.js

pairwise(list, options)

Given a list, return a list of all pairs in that list via Array.reduce()

Optionally filter and transform (map) the pairs based on items and indices.