snapshot_icons.sh

#!/usr/bin/env bash

# Take a snapshot of user and system application icons before the Big Sur aesthetic is applied

function sync() {
	FROM="$1"
	TO="$2"

	mkdir -p "$TO"

	# Temporarily rename all foo_app to foo.app for sync purposes
	find "$TO" -depth -name "*_app" -exec sh -c 'mv "$1" "${1%_app}.app"' _ {} \;

	# To "lock" an icon provide the relative path to the containing folder
	## e.g. "Google Chrome.app/Contents/Resources/*.icns"

	# To lock all icons in an app use **
	## e.g. "Google Chrome.app/**.icns"

	# To only copy new files, add the rsync flag --ignore-existing

	# To preview, add --dry-run

	rsync -zarv  --prune-empty-dirs \
	--ignore-existing \
	--exclude="Google Chrome Canary.app/Contents/Resources/*.icns" \
	--exclude="Google Chrome.app/Contents/Resources/*.icns" \
	--include "*/" \
	--include="*.icns" \
	--include="Info.plist" \
	--exclude="*" \
	"$FROM" "$TO"

	# Rename all foo.app to foo_app to avoid confusing launchers that look for apps
	find "$TO" -depth -name "*.app" -exec sh -c 'mv "$1" "${1%.app}_app"' _ {} \;
}

# Uncomment lines below to create a "synced_icons" folder in the current directory and sync specified folders
# sync "/Applications/" "./synced_icons/Applications"
# sync "$HOME/Applications/" "./synced_icons/UserApps"

# Includes System /Applications/Utilities as well
# sync "/System/Applications/" "./synced_icons/SysApps"