Provided by: systemd_255.4-1ubuntu8.11_amd64 

NAME
systemd-xdg-autostart-generator - User unit generator for XDG autostart files
SYNOPSIS
/usr/lib/systemd/user-generators/systemd-xdg-autostart-generator
DESCRIPTION
systemd-xdg-autostart-generator is a generator that creates .service units for XDG autostart[1] files.
This permits desktop environments to delegate startup of these applications to systemd(1) .
Units created by systemd-xdg-autostart-generator can be started by the desktop environment using
"xdg-desktop-autostart.target". See systemd.special(7) for more details.
XDG autostart may be conditionalized using both standardized and non-standardized keys. In order to
handle these, the generator may create one or more ExecCondition= entries. For non-standardized keys,
well-known helper binaries provided by Desktop Environments are used. All external helpers must detect
their corresponding desktop environment and must return success when run in a different environment. This
is important as all ExecCondition= directives must succeed for an application to be started.
Table 1. Special XDG desktop file entries that are processed
┌───────────────────────────────────────┬─────────────────────────────────────┐
│ Entry │ Handling │
├───────────────────────────────────────┼─────────────────────────────────────┤
│ Hidden=, X-systemd-skip= │ No service will be generated if set │
│ │ to true │
├───────────────────────────────────────┼─────────────────────────────────────┤
│ OnlyShowIn=, NotShowIn= │ ExecCondition= using │
│ │ systemd-xdg-autostart-condition │
├───────────────────────────────────────┼─────────────────────────────────────┤
│ TryExec= │ No service will be generated if the │
│ │ binary does not exist or cannot be │
│ │ executed │
├───────────────────────────────────────┼─────────────────────────────────────┤
│ AutostartCondition= (GNOME extension) │ ExecCondition= using │
│ │ gnome-systemd-autostart-condition │
├───────────────────────────────────────┼─────────────────────────────────────┤
│ X-GNOME-Autostart-Phase= │ No service will be generated if set │
│ │ to any value │
├───────────────────────────────────────┼─────────────────────────────────────┤
│ X-KDE-autostart-condition= │ ExecCondition= using │
│ │ kde-systemd-start-condition │
└───────────────────────────────────────┴─────────────────────────────────────┘
systemd-xdg-autostart-generator implements systemd.generator(7).
SEE ALSO
systemd(1), systemd.service(5), systemd.target(5)
NOTES
1. XDG autostart
https://specifications.freedesktop.org/autostart-spec/autostart-spec-latest.html
systemd 255 SYSTEMD-XDG-AUTOSTART-GENERATOR(8)