re-activate disabled system preferences panes on os x

sh.script

$ cd /Library/Managed Preferences/<login>
$ cp com.apple.systempreferences.plist ~/com.apple.systempreferences.plist.backup
$ cp complete.plist ~/complete.plist.backup

$ /usr/libexec/PlistBuddy -c Print: com.apple.systempreferences.plist
Dict {
    DisabledPreferencePanes = Array {
        com.apple.prefs.backup
        com.apple.preferences.configurationprofiles
        com.apple.preferences.users
    }
    PayloadUUID = <uid3>
}
$ sudo /usr/libexec/PlistBuddy -c 'Delete DisabledPreferencePanes' com.apple.systempreferences.plist
$ /usr/libexec/PlistBuddy -c Print: com.apple.systempreferences.plist
Dict {
    PayloadUUID = <uid3>
}

$ /usr/libexec/PlistBuddy -c Print:com.apple.systempreferences complete.plist
Dict {
    DisabledPreferencePanes = Dict {
        source = Array {
            mcx_computer_com.apple.systempreferences_<uid1>
            mcx_computer_com.apple.systempreferences_<uid2>
        }
        mcxdomain = always
        value = Array {
            com.apple.prefs.backup
            com.apple.preferences.configurationprofiles
            com.apple.preferences.users
        }
    }
    PayloadUUID = Dict {
        source = Array {
            mcx_computer_com.apple.systempreferences_<uid1>
            mcx_computer_com.apple.systempreferences_<uid2>
        }
        mcxdomain = always
        value = <uid3>
    }
}
$ sudo /usr/libexec/PlistBuddy -c 'Delete com.apple.systempreferences:DisabledPreferencePanes' complete.plist
$ /usr/libexec/PlistBuddy -c Print:com.apple.systempreferences complete.plist
Dict {
    PayloadUUID = Dict {
        source = Array {
            mcx_computer_com.apple.systempreferences_<uid1>
            mcx_computer_com.apple.systempreferences_<uid2>
        }
        mcxdomain = always
        value = <uid3>
    }
}