Systemd

Drop-in Files

We could configure a service by using drop-in files in /etc/systemd/system/{service}.service.d/.

Cgroups

To view 202204071051# related information, use commands systemd-cgls to show cgroups in tree hierarchy and systemd-cgtop to show their current resource usage. Most of such information are stored in the system.slice directory.

Except Slice option (to create a custom cgroup), all property related to cgroups could be defined and altered by the command systemctl set-property {Option}.

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  • X Display Manager Control Protocol (XDMCP)

    We can choose the so-called 202205182153#, formally XDMCP server, by changing the variable DISPLAYMANAGER defined in the directory /etc/sysconfig or the SysV, Upstart or Systemd script (Debian and Arch). Depending on the Linux distro, this variable could be found and/or defined in the file desktop (Fedora) or displaymanager (openSUSE). The variable can be either the executable file that start up the server (Fedora) or the name of that server (openSUSE). These servers are listed below:

  • Linux
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