You can also use ConditionKernelVersion like so

/etc/systemd/system/{vboxadd,vboxadd-service}.service.d/kerver.conf ------------------------------------------------- [Unit] ConditionKernelVersion=<4.15

Giacomo Longo

2018-02-11 13:47 GMT+01:00 Giacomo Longo gabibbo97@gmail.com:

So you want to have

vboxadd-service and vboxadd systemd services not starting on Linux kernel versions 4.15 and above?

You can manage this by creating a template systemd unit

/etc/systemd/system/kernel-version-less-then@.service

[Unit] Description=Check if currently installed kernel version is less than target

[Service] Type=oneshot ExecStart=/usr/bin/sh -c '[[ "$(/usr/bin/vercmp %i %v)" = "1" ]]' Restart=no CollectMode=inactive-or-failed

[Install] WantedBy=multi-user.target

Then create the directories

/etc/systemd/system/vboxadd.service.d/ /etc/systemd/system/vboxadd-service.service.d/

Then for each service

/etc/systemd/system/vboxadd.service.d/kerver.conf

[Unit] After=kernel-version-less-then@4.15.service Requires=kernel-version-less-then@4.15.service

/etc/systemd/system/vboxadd-service.service.d/kerver.conf

[Unit] After=kernel-version-less-then@4.15.service Requires=kernel-version-less-then@4.15.service

In this way, if my bash-fu is correct, the version compare will fail the kernel-version-less-then@4.15.service and vboxadd and vboxadd-service will not start

Giacomo Longo