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#+title: macOS
#+slug: macos
#+description: All about the macOS operating system.
#+date: [2026-02-21 Sat 14:01:32]
* Delete Annoying ~.DS_Store~ Files
A simple command, using ~fd~ to clean up all ~.DS_Store~ files in any directory.
#+begin_src sh
# Run the command directly
fd -H '.DS_Store' -t f -x rm
# Or, create an alias for it
alias xclean="fd -H '.DS_Store' -t f -x rm"
xclean
#+end_src
* Hardening macOS
Ref: [[https://github.com/drduh/macOS-Security-and-Privacy-Guide/blob/master/README.md][macOS Security and Privacy Guide]]
#+begin_src sh
# Generalize computer name
sudo scutil --set ComputerName MacBook
sudo scutil --set LocalHostName MacBook
# Enable firewall
sudo /usr/libexec/ApplicationFirewall/socketfilterfw --setglobalstate on
sudo /usr/libexec/ApplicationFirewall/socketfilterfw --setstealthmode on
sudo /usr/libexec/ApplicationFirewall/socketfilterfw --setallowsigned off
sudo /usr/libexec/ApplicationFirewall/socketfilterfw --setallowsignedapp off
sudo pkill -HUP socketfilterfw
# Use Homebrew for software management
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
brew analytics off
brew update && brew upgrade
# Use a secure and private browser(s)
## Harden these manually after installing
brew install --cask tor-browser ungoogled-chromium firefox
# Use a secure and private messenger
## Signal; XMPP (e.g., Monal); Matrix (e.g., Element)
brew install --cask signal monal element
# GPG
## Install
brew install gnupg
## Use recommended settings
curl -o ~/.gnupg/gpg.conf https://raw.githubusercontent.com/drduh/config/main/gpg.conf
# Delete Metadata
## Bluetooth
sudo defaults delete /Library/Preferences/com.apple.Bluetooth.plist DeviceCache
sudo defaults delete /Library/Preferences/com.apple.Bluetooth.plist IDSPairedDevices
sudo defaults delete /Library/Preferences/com.apple.Bluetooth.plist PANDevices
sudo defaults delete /Library/Preferences/com.apple.Bluetooth.plist PANInterfaces
sudo defaults delete /Library/Preferences/com.apple.Bluetooth.plist SCOAudioDevices
## CUPS
sudo rm -rfv /var/spool/cups/c0*
sudo rm -rfv /var/spool/cups/tmp/*
sudo rm -rfv /var/spool/cups/cache/job.cache*
## Connections
sudo defaults delete /Users/$USER/Library/Preferences/com.apple.iPod.plist "conn:128:Last Connect"
sudo defaults delete /Users/$USER/Library/Preferences/com.apple.iPod.plist Devices
sudo defaults delete /Library/Preferences/com.apple.iPod.plist "conn:128:Last Connect"
sudo defaults delete /Library/Preferences/com.apple.iPod.plist Devices
sudo rm -rfv /var/db/lockdown/*
## Quicklook
rm -rfv $(getconf DARWIN_USER_CACHE_DIR)/com.apple.QuickLook.thumbnailcache/exclusive
rm -rfv $(getconf DARWIN_USER_CACHE_DIR)/com.apple.QuickLook.thumbnailcache/index.sqlite
rm -rfv $(getconf DARWIN_USER_CACHE_DIR)/com.apple.QuickLook.thumbnailcache/index.sqlite-shm
rm -rfv $(getconf DARWIN_USER_CACHE_DIR)/com.apple.QuickLook.thumbnailcache/index.sqlite-wal
rm -rfv $(getconf DARWIN_USER_CACHE_DIR)/com.apple.QuickLook.thumbnailcache/resetreason
rm -rfv $(getconf DARWIN_USER_CACHE_DIR)/com.apple.QuickLook.thumbnailcache/thumbnails.data
sudo rm -rfv $(getconf DARWIN_USER_CACHE_DIR)/com.apple.QuickLook.thumbnailcache/thumbnails.fraghandler
sudo rm -rfv $(getconf DARWIN_USER_CACHE_DIR)/com.apple.QuickLook.thumbnailcache/exclusive
sudo rm -rfv $(getconf DARWIN_USER_CACHE_DIR)/com.apple.QuickLook.thumbnailcache/index.sqlite
sudo rm -rfv $(getconf DARWIN_USER_CACHE_DIR)/com.apple.QuickLook.thumbnailcache/index.sqlite-shm
sudo rm -rfv $(getconf DARWIN_USER_CACHE_DIR)/com.apple.QuickLook.thumbnailcache/index.sqlite-wal
sudo rm -rfv $(getconf DARWIN_USER_CACHE_DIR)/com.apple.QuickLook.thumbnailcache/resetreason
sudo rm -rfv $(getconf DARWIN_USER_CACHE_DIR)/com.apple.QuickLook.thumbnailcache/thumbnails.data
sudo rm -rfv $(getconf DARWIN_USER_CACHE_DIR)/com.apple.QuickLook.thumbnailcache/thumbnails.fraghandler
rm -rfv "~/Library/Application Support/Quick Look/*"
chmod -R 000 "~/Library/Application Support/Quick Look"
chflags -R uchg "~/Library/Application Support/Quick Look"
## Finder
defaults delete ~/Library/Preferences/com.apple.finder.plist FXDesktopVolumePositions
defaults delete ~/Library/Preferences/com.apple.finder.plist FXRecentFolders
defaults delete ~/Library/Preferences/com.apple.finder.plist RecentMoveAndCopyDestinations
defaults delete ~/Library/Preferences/com.apple.finder.plist RecentSearches
defaults delete ~/Library/Preferences/com.apple.finder.plist SGTRecentFileSearches
## WiFi
sudo nvram -d 36C28AB5-6566-4C50-9EBD-CBB920F83843:current-network
sudo nvram -d 36C28AB5-6566-4C50-9EBD-CBB920F83843:preferred-networks
sudo nvram -d 36C28AB5-6566-4C50-9EBD-CBB920F83843:preferred-count
## Typing
rm -rfv "~/Library/LanguageModeling/*" "~/Library/Spelling/*" "~/Library/Suggestions/*"
chmod -R 000 ~/Library/LanguageModeling ~/Library/Spelling ~/Library/Suggestions
chflags -R uchg ~/Library/LanguageModeling ~/Library/Spelling ~/Library/Suggestions
## Apps
rm -rfv ~/Library/Saved\ Application\ State/*
rm -rfv ~/Library/Containers/<APPNAME>/Data/Library/Saved\ Application\ State
chmod -R 000 ~/Library/Saved\ Application\ State/
chmod -R 000 ~/Library/Containers/<APPNAME>/Data/Library/Saved\ Application\ State
chflags -R uchg ~/Library/Saved\ Application\ State/
chflags -R uchg ~/Library/Containers/<APPNAME>/Data/Library/Saved\ Application\ State
## Autosave
rm -rfv "~/Library/Containers/<APP>/Data/Library/Autosave Information"
rm -rfv "~/Library/Autosave Information"
chmod -R 000 "~/Library/Containers/<APP>/Data/Library/Autosave Information"
chmod -R 000 "~/Library/Autosave Information"
chflags -R uchg "~/Library/Containers/<APP>/Data/Library/Autosave Information"
chflags -R uchg "~/Library/Autosave Information"
## Siri Analytics
rm -rfv ~/Library/Assistant/SiriAnalytics.db
chmod -R 000 ~/Library/Assistant/SiriAnalytics.db
chflags -R uchg ~/Library/Assistant/SiriAnalytics.db
## iTunes
defaults delete ~/Library/Preferences/com.apple.iTunes.plist recentSearches
## QuickTime
~/Library/Containers/com.apple.QuickTimePlayerX/Data/Library/Preferences/com.apple.QuickTimePlayerX.plist
## Misc.
~/Library/Containers/com.apple.appstore/Data/Library/Preferences/com.apple.commerce.knownclients.plist
~/Library/Preferences/com.apple.commerce.plist
~/Library/Preferences/com.apple.QuickTimePlayerX.plist
#+end_src
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