Shihpin Tseng deftsp

Install NixOS on ZFS With Opt-In State

Commands

# nvme0n1
# ├─nvme0n1p1    BOOT
# └─nvme0n1p2    LUKS CONTAINER
#   └─cryptroot  LUKS MAPPER
#     └─vg-swap  SWAP

If you're using a high-end bluetooth headset on your Macbook Pro it's likely your mac is using an audio codec which favors battery efficiency over high quality. This results in a drastic degradation of sound, the SBC codec is the likely culprit, read more about it here.

Find out what codec you're using

Play a song on your headphones
Option (⌥) click the Bluetooth button at the top of your screen
If you're using AAC or aptX, you can stop here—those are the highest quality codecs.

Change your codec to AAC or aptX

Cycript on Mojave

Cycript is a tool I find very helpful. It's an effective REPL for Objective-C. When I updated to macOS Mojave, I found that cycript no longer worked because it was linked against an old version of Ruby. After attempting to compile from source, I tried another solution. install_name_tool is an open source tool for modifying the names of linked shared libraries in a Mach-O.

Solution

$ install_name_tool -change /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/libruby.2.0.0.dylib /System/Library/Frameworks/Ruby.framework/Versions/Current/usr/lib/libruby.dylib Cycript.lib/cycript-apl
$ install_name_tool -change /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/libruby.2.0.0.dylib /System/Library/Frameworks/Ruby.framework/Versions/Current/usr/lib/libruby.dylib Cycript.lib/libcycript.dylib

Achieving warp speed with Rust

	# Install the toolchain
	```bash
	brew tap SergioBenitez/osxct
	brew install x86_64-unknown-linux-gnu
	```

	# this should get installed in:
	# /opt/homebrew/Cellar/x86_64-unknown-linux-gnu/

	# Installing the macOS OpenSSL - if not already installed

	;;; package --- Fix permissions for Emacs.app on macOS Catalina
	;;; Author: Artem Loenko
	;;; Mail-To: <[email protected]>
	;;; Commentary:
	;;; Code:

	(defconst _default-emacs-app-plist-path "/Applications/Emacs.app/Contents/Info.plist")
	(defconst _temp-buffer-name "fixing Emacs permissions")
	(defconst _temp-buffer (get-buffer-create _temp-buffer-name))
	(with-current-buffer _temp-buffer (erase-buffer))

	upload(files) {
	const config = {
	onUploadProgress: function(progressEvent) {
	var percentCompleted = Math.round((progressEvent.loaded * 100) / progressEvent.total)
	console.log(percentCompleted)
	}
	}

	let data = new FormData()
	data.append('file', files[0])

	#!/bin/bash

	set -e

	###############################################################################
	# This script tries to repair a Time Machine network backup (i.e. an APF
	# share containing a sparsebundle) that is shared over a network using e.g. an
	# Apple TimeCapsule, a NAS, Raspberry PI, ...
	# The script must be run on the computer that created the backup
	#


	git log --author="Linus Torvalds" --date=iso \| perl -nalE 'if (/^Date:\s+[\d-]{10}\s(\d{2})/) { say $1+0 }' \| sort \| uniq -c\|perl -MList::Util=max -nalE '$h{$F[1]} = $F[0]; }{ $m = max values %h; foreach (0..23) { $h{$_} = 0 if not exists $h{$_} } foreach (sort {$a <=> $b } keys %h) { say sprintf "%02d - %4d %s", $_, $h{$_}, ""x ($h{$_} / $m 50); }'