Tools

Question 1

Apple Git command to rebase PR onto main

Answer 1

git-apple-merge-pull-request

Question 2

Internal tool to generate the swift interface

Answer 2

swift-api-dump-.py

Question 3

Difference between tilde and caret in GIT

Answer 3

Tilde: <rev>~<n> goes backward n parents from <rev>
Caret: <rev>^<n> select the nth immediate parent from merge commit</n></rev></rev></n></rev>

Question 4

Command to show memory leaks of a process

Answer 4

leaks -processInfo

Question 5

Command to show symbols of a root

Answer 5

symbols -uuid

Question 6

Apple CLI tool to control and query on daemons and agents

Answer 6

launchctl

Question 7

Apple CLI to configure SIP

Answer 7

csrutil

Question 8

Apple CLI to get or set kernel state

Answer 8

sysctl

Question 9

Apple CLI to manipulate firmware variables

Answer 9

nvram

Question 10

Apple CLI to display the loaded kernel extensions

Answer 10

kextstat

Question 11

CLI to manipulate apple archives

Answer 11

aa

Question 12

CLI to make system partition writable

Answer 12

snapshottool golive 2

Question 13

Apple CLI of the sandbox compiler

Answer 13

sbutil

Question 14

VzTestRunner: 3 facts

Answer 14

Run tests on VMs stored in GIT LFS repository
Tests are either VZTests or Python tests
Commands and responses are transmitted over SSH

Question 15

Apple CLI to read and modify preferences

Answer 15

defaults

Question 16

Apple CLI to query product information

Answer 16

Embedded_device_map

Question 17

Which field is ‘d53gap` in Targets?

Answer 17

Target

Question 18

Which field is ‘t8101` in Targets?

Answer 18

Platform

Question 19

Which field is ‘iPhone13,2` in Targets?

Answer 19

ProductType

Question 20

Which field is ‘H13P` in Targets?

Answer 20

PlatformName

Question 21

Which exception corresponds to BASE_ASSERT in crash call stack?

Answer 21

EXC_BAD_INSTRUCTION (SIGABRT)

Question 22

App I used to edit demo video

Answer 22

iMovie

Question 23

Apple CLI to show xnu version and other info

Answer 23

uname

Question 24

Fuzzball

Answer 24

Using VMs on ASM to enable large scale testing

Question 25

Bazel

Answer 25

Build and test software of any size, quickly and reliably

Question 26

WebVM

Answer 26

Server-less virtual Linux environment running fully client-side in HTML5/WebAssembly

Question 27

Where to find common options from Xcode to clang?

Answer 27

/path/to/file.resp

Question 28

Where is the Xcode build folder?

Answer 28

/users/me/library/developer/xcode/deriveddata/project-hash/