<cjwatson@amber ~ (master)>$ sudo apt-get install systemd-sysv-
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'systemd-sysv' is not installed, so not removed
0 to upgrade, 0 to newly install, 0 to remove and 66 not to upgrade.
<cjwatson@amber ~ (master)>$ echo $?
0