How to delete or disable a systemd timer?

Question

I don't need mandb to run everyday. Especially in my virtual machine. So I do this:
sudo rm -fr /usr/lib/systemd/system/man-db.*
sudo systemctl daemon-reload
sudo systemctl disable man-db.timer
but I still got this:
systemctl list-timers --all
NEXT LEFT LAST PASSED UNIT ACTIVATES
Sun 2014-09-14 00:00:00 HKT 8h left Sat 2014-09-13 13:57:03 HKT 1h 56min ago logrotate.timer logrotate.service
Sun 2014-09-14 00:00:00 HKT 8h left Sat 2014-09-13 13:57:03 HKT 1h 56min ago shadow.timer shadow.service
Sun 2014-09-14 15:21:36 HKT 23h left Sat 2014-09-13 15:21:36 HKT 31min ago systemd-tmpfiles-clean.timer systemd-tmpfiles-cle
n/a n/a Sat 2014-09-13 13:57:03 HKT 1h 56min ago man-db.timer
n/a n/a n/a n/a systemd-readahead-done.timer systemd-readahead-do
5 timers listed.
which means mand-db.timer is still identified by systemd, although it may not work.
Any ideas?

Answer 1

Thanks emeres. I will consider your way. I still think the timer thing is a design defect.
To tomk and graysky, remove man-db package is not an option. Because if you use Linux for several years, you are familiar with the applications you usually use. If something new comes out for example systemd. I will read ArchLinux Wiki first, it may mention man page like "See man systemd.unit for details. ". So command apropos is rarely used, but command man is not.
The reason I want to remove man-db timer is not only because above, but also because it slows down statup. I use double OS Windows and Linux. Access data in Linux partition (include a EXT4 backup hard drive) by using VBox. Command mandb runs 5 minutes at least and CPU is fully loaded in VBox. That really annoy me. Especially everyday.
Last edited by gkjarch (2014-09-14 06:23:52)