Category Archives: OSX

Spotify: Multiuser Issues

I’ve recently hit an annoying issue: if you share your mac with, say, your brother… you’ll figure out that Spotify will only work in one of the two accounts.

It doesn’t really matter if you actually have two seats or not. It won’t run at all.

Solution?. As ever… bash and…



cd /Applications

sudo chmod -R 755 Spotify.app/

Let’s Encrypt + Amazon AMI

Download certbot



$ wget https://dl.eff.org/certbot-auto

$ chmod a+x certbot-auto

Generate Certificates



sudo ./certbot-auto --debug -v --server https://acme-v01.api.letsencrypt.org/directory certonly -d YOUR_WEBSITE_HERE

Auto Renew Script:



sudo crontab -e

0 1,13 * * * /home/ec2-user/certbot-auto renew

Source Here

LLDB + Xcode 8 Kung Fu

Printing Arrays

parray  number pointer
poarray number pointer

Reading Method Parameters

register read $arg1 $arg2
memory read $arg1

Printing Objects in Swift

expr -O --language objc -- 0x1003183e0

Disassembling the current frame

disassemble --frame

Module Image

image list ModuleName

UIStackView inside UISScrollView

1. Disable tAMIC

scrollView.translatesAutoresizingMaskIntoConstraints = false
stackView.translatesAutoresizingMaskIntoConstraints = false

2. Pin the ScrollView

NSLayoutConstraint.activate([
  scrollView.leadingAnchor.constraint(equalTo: leadingAnchor),
  scrollView.trailingAnchor.constraint(equalTo: trailingAnchor),
  scrollView.topAnchor.constraint(equalTo: topAnchor),
  scrollView.bottomAnchor.constraint(equalTo: bottomAnchor)
  ])

3. Pin the StackView to the ScrollView corners. Include minimum width + padding:

let padding = CGFloat(10)
NSLayoutConstraint.activate([
  stackView.leadingAnchor.constraint(equalTo: scrollView.leadingAnchor, constant: padding),
  stackView.trailingAnchor.constraint(equalTo: scrollView.trailingAnchor, constant: -padding),
  stackView.topAnchor.constraint(equalTo: scrollView.topAnchor),
  stackView.bottomAnchor.constraint(equalTo: scrollView.bottomAnchor),
  stackView.heightAnchor.constraint(equalTo: scrollView.heightAnchor),
  stackView.widthAnchor.constraint(greaterThanOrEqualTo: scrollView.widthAnchor, constant: -2 * padding)
])