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@simonjbeaumont
simonjbeaumont / tmup
Last active October 13, 2021 11:03
Update bash to latest tmux environment on reattaching.
#!/bin/bash
tmup ()
{
echo -n "Updating to latest tmux environment...";
export IFS=",";
for line in $(tmux showenv -t $(tmux display -p "#S") | tr "\n" ",");
do
if [[ $line == -* ]]; then
unset $(echo $line | cut -c2-);
@julianlam
julianlam / provisioning-unprivileged-lxc-containers-via-login-or-script.md
Last active September 7, 2023 12:45
Provisioning and usage of unprivileged LXC containers via indirect login or script #blog

Provisioning and usage of unprivileged LXC containers via indirect login or script

As I've discovered, managing LXC containers is fairly straightforward, but when building out a system for provisioning out user maintained instances of NodeBB, it was imperative that unprivileged LXC containers were used, so that in the event of shell breakout from NodeBB followed by privilege escalation of the saas user, the root user in the LXC container would only be an unprivileged user on the host machine.

During the course of development, I ran into numerous blockers when it came to managing LXC containers in unexpected circumstances. Namely:

  • Using LXC in a subshell is not directly supported. This usually happens under one of the following two circumstances:
    • After switching users via su or executing lxc-* commands as another user via sudo
    • Executing lxc-* commands via a program, application, or script. In my case, a Node.js application.
@badsyntax
badsyntax / react-native-apple-m1.md
Last active March 11, 2024 18:25
Some tips to working with react-native 0.64 on an Apple M1 Silicon chip

My env:

  • cocoapods 1.10.1
  • xcode 12.4
  • macos big sur 11.2.3
  • react-native 0.64

iOS

The iOS simulator build won't "just work". If you get errors like ld: library not found for... or swift compiler errors, then you need to disable arm64 for the simulator build.