Software

macOS

Softwares

Keyboard and Mouse
- https://github.com/pqrs-org/Karabiner-Elements
- https://github.com/linearmouse/linearmouse (deprecated after macOS Sonoma)
- https://github.com/Caldis/Mos
Windows Manager
- https://github.com/koekeishiya/yabai
- https://github.com/koekeishiya/skhd
Utilities
Side loading
- https://sideloadly.io/

Defaults

Dock Icon Size

defaults write com.apple.dock "tilesize" -int "48" && killall Dock

Dock Animation Time

defaults write com.apple.dock "autohide-time-modifier" -float "0.2" && killall Dock

TextEdit Plain Text

defaults write com.apple.TextEdit "RichText" -bool "false" && killall TextEdit

https://macos-defaults.com/

Audio HUD

SwiftUI daemon that can be run as a service and act upon signals, the lifecycle is as follows

Receive a signal
Call a bash script to switch the audio device, which returns the new audio device name, then
Prevent the hud from fading if additional signal is received, otherwise fade the hud after 1 second
Using signals in Swift
Directly calling the macOS OSD
- Cannot run the code

IP Address

Public IP

dig -4 TXT +short o-o.myaddr.l.google.com @ns1.google.com

Local Wireless IP

ipconfig getifaddr en1

Local Ethernet IP

ipconfig getifaddr en0

https://apple.stackexchange.com/a/20553

Disable Special Characters by Option Key

https://stackoverflow.com/a/16019737

Download the layout from http://wordherd.com/keyboards/
Put the file in ~/Library/Keyboard Layouts
Log out, log in
System Settings > Keyboard > Text Input > Input Sources > Edit > + > Others

Changing Bundle Name

Modify CFBundleName within `Applications/<application_name>.app/Contents/InfoPlist.strings1

https://apple.stackexchange.com/questions/385073/how-do-i-rename-an-app-in-macos-properly

Docker

Rebuild

docker compose up -d --no-deps --build <service_name>

C++

Compilation

g++ -std=c++11 -o <output> <input>.cpp && ./<output>

ASCII Chart

https://en.cppreference.com/w/cpp/language/ascii

Bitwise Operators

https://www.programiz.com/cpp-programming/bitwise-operators

Git

Ignore after committing

https://stackoverflow.com/questions/7927230/remove-directory-from-remote-repository-after-adding-them-to-gitignore

Terminal

Simple HTTP Server

https://github.com/TheWaWaR/simple-http-server

simple-http-server -u -p 80 -l 1000000000

Allow upload, port 80, size limit 1GB

Date Difference

d1=$(gdate +%s)
d2=$(gdate -d "YYYYMMDD" +%s)
printf "Days\t%.2f\nMonths\t%.2f\nYears\t%.2f\n" $(((d1 - d2) / 86400.0)) $(((d1 - d2) / 86400 / 30.0)) $(((d1 - d2) / 86400 / 365.0))

GZIP

// Compress
tar -czvf <out>.tar.gz <dir>

// Decompress
tar -xzvf <in>.tar.gz

// List
tar -tzvf <in>.tar.gz

Prune ZIP

zip -vr <output>.zip <input_dir> -x '**/.DS_Store' -x '**/__MACOSX'`

https://apple.stackexchange.com/a/239587

Unzip Multiple Archives

for i in *.zip; do unzip "$i" -d "${i%%.zip}"; done

https://askubuntu.com/a/962876

Split Image

Vertically

convert -crop 100%x<height>% <input>.png <output>.png

Horizontally

convert -crop <width>%x100% <input>.png <output>.png
“

Useful when dealing with long screenshots

https://unix.stackexchange.com/a/169548

Unlock PDF

qpdf --decrypt --password=<passoword> <input>.pdf <output>.pdf

Prune Metadata

Using exiftool

exiftool -all= <inpt>

Using the Python package mat2

mat2 <input> <output> or mat2 --inplace <input>

Execution Permission

chmod +x <input>.sh

One Line If

https://unix.stackexchange.com/a/90995

Math

Reading Multiple Predicates

https://math.stackexchange.com/a/2582522

Finding GCD (Euclidean Algorithm)

$a \div b$ then take the numerator as $n$
$a \div n$ is the GCD

e.g. GCD(35, 55) = 5, by the method, $\frac{35}{55} = \frac{7}{11}, \frac{35}{7} = 5$

Spreadsheet

Custom Number Formats

Percentage that display a dash if it is zero (e.g. 64%)
- 0.0%;-0.0%;-
Accounting (e.g. $ 2,048.0)
- _($* #,##0.0_);_($* (#,##0.0);_($* "-"??_);_(@_)

App Scripts

API for iOS shortcuts

var sheet = SpreadsheetApp.openById("1VIXHPp4d_L0gv2h9FdP1beyeZbeg-DYG88d47FSqAUw").getSheetByName('Outgoing');

function doGet(e) {
  var date = Utilities.formatDate(new Date(), "GMT+8", "yyyy/MM/dd");
  
  var item = JSON.parse(e.parameters.item)
  var quantity = JSON.parse(e.parameters.quantity)
  var amount = JSON.parse(e.parameters.amount)
  var type = JSON.parse(e.parameters.type)
  var person = JSON.parse(e.parameters.person)

  sheet.appendRow([date, item, +quantity, +amount, "", type, person]);
}

Go to Last Row

function goToLastRow() {
  let ss = SpreadsheetApp.getActiveSpreadsheet();
  let sheet = ss.getSheetByName(ss.getSheets()[0].getName());
  sheet.setActiveRange(sheet.getRange(sheet.getLastRow(),1));
}

function onOpen() {
  SpreadsheetApp.getUi().createMenu("Last Row").addItem("Go to Last Row", "goToLastRow").addToUi();
}

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