macos.md

Notes relating macOS

macOS Shortcuts

Key	Function
cmd + ` (grave accent)	switch between windows of a same program

Shortcut List

• Mac keyboard shortcuts - support.apple.com
• Mac OS X Finder Keyboard Shortcuts - dummies.com

BSD Bash Usage

Display disk usage statistics sorted by human readable numbers (ref)

# use GNU sort which supports the missing option "-h"
$ du -hd 1 | gsort -h

Open man page in new terminal window (ref)

$ open x-man-page://<name>

• zip and unzip

  # dry run, list files
  unzip -l file.zip
  
  # unzip specific file
  unzip file.zip path/to/file.txt     # this will create "./path/to/file.txt"
  
  # unzip specific file and drop directory structures in archive
  unzip -j file.zip path/to/file.txt  # this will create "./file.txt"

Homebrew

brew CLI program

https://docs.brew.sh/Manpage

• Display local location of homebrew itself or one of cloned tap https://docs.brew.sh/Manpage#--repository---repo-tap- brew --repository [OWNER/REPO]

  # /usr/local/Homebrew
  cd $(brew --repository)
  
  # tap OWNER/REPO is located in $(brew --reposot)/Library/Taps/OWNER/homebrew-REPO
  brew --repo homebrew/casks
  brew --repo dart-lang/dart

• Show (installed) dependents of a formula https://docs.brew.sh/Manpage#uses-options-formula- brew uses --recursive --installed <formula> seen in https://stackoverflow.com/a/66142860

• Show dependencies of a formula https://docs.brew.sh/Manpage#deps-options-formulacask- brew deps <formula>

Writing formulae and casks

• Adding formula or cask to Homebrew https://docs.brew.sh/Adding-Software-to-Homebrew

• Formula Cookbook https://docs.brew.sh/Formula-Cookbook

• Cask Cookbook https://docs.brew.sh/Cask-Cookbook

• version Stanza Details

  • Example: Homebrew/homebrew-cask-fonts#2082

GNU, instead of BSD CLI Tools

• Show dependencies as a tree: brew deps --tree <formula>

Name	Homebrew formula
ggrep	brew info grep
gsed	brew info gnu-sed
gsort	brew info coreutils

Where do PATHs come from

1. /etc/profiles
2. /usr/libexec/path_helper -s
3. /etc/paths + file lines under /etc/paths.d
4. shell profiles (e.g., zsh startup files) see ref

Zsh

Remove duplicates in zsh history (ref)

cat -n $HISTFILE | sort -t ';' -uk2 | sort -nk1 | cut -f2- > .zsh_short_history