neither works
switched to day view
quit ichat
defaults write com.apple.iCal "n days of week" 2
defaults read com.apple.iCal "n days of week"
2
relaunch ichat
switch to week view
still shows 7 days
switched to day view
quit ichat
defaults write com.apple.iCal CalUIDebugDefaultDaysInWeekView 2
defaults read com.apple.iCal CalUIDebugDefaultDaysInWeekView
2
relaunch ichat
switch to week view
still shows 7 days
cat /System/Library/CoreServices/SystemVersion.plist | grep -A1 ProductVersion | tail -n1
<string>10.8.4</string>
cat /Applications/Calendar.app/Contents/version.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>BuildVersion</key>
<string>2</string>
<key>CFBundleShortVersionString</key>
<string>6.0</string>
<key>CFBundleVersion</key>
<string>1648</string>
<key>ProjectName</key>
<string>iCal</string>
<key>SourceVersion</key>
<string>1648000000000000</string>
</dict>
</plist>