systemd has many default values that can be modified by Linux distributions. (By default values, I mean general systemd settings. Not unit specific settings.) How can I see a dump of those values?

For example I am interested to see what DefaultTasksMax is.

  • If you found one of the answers to be correct, please accept it. Oct 16, 2017 at 18:04

2 Answers 2


You are looking for systemctl show -all for the global property set or systemctl show $servicename --all for a particular service.

I found the answer by searching man systemctl for first "dump", and then "show", which found the command.

Or to answer your specific question:

$ systemctl show --property=DefaultTasksMax

DefaultTasksMax was added in systemd version 228.

  • systemctl show --property=DefaultTasksMax outputs nothing for me.
    – adrelanos
    Dec 4, 2016 at 19:36
  • Try sudo systemctl show --all | grep DefaultTasksMax. Also, share what version of systemd you are using. Dec 5, 2016 at 15:27
  • No results either. Debian jessie version 215-17+deb8u5.
    – adrelanos
    Dec 5, 2016 at 16:29
  • 1
    I checked the Changelog. This property was added in systemd version 228, which is why you find no default value. The property doesn't exist on your system. Dec 5, 2016 at 20:20
  • This answer is more clean. Oct 16, 2017 at 15:00

You can find the systemd system instance configurations at,


And the user instance configurations at,


For more information check manpage for systemd-system.conf

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