systemd-debug-generator is a generator that reads the kernel command
line and understands three options:
If the systemd.mask= option is specified and followed by a unit name,
this unit is masked for the runtime, similar to the effect of
systemctl(1)'s mask command. This is useful to boot with certain
units removed from the initial boot transaction for debugging system
startup. May be specified more than once.
If the systemd.wants= option is specified and followed by a unit
name, a start job for this unit is added to the initial transaction.
This is useful to start one or more additional units at boot. May be
specified more than once.
If the systemd.debug_shell option is specified, the debug shell
service "debug-shell.service" is pulled into the boot transaction. It
will spawn a debug shell on tty9 during early system startup. Note
that the shell may also be turned on persistently by enabling it with
systemctl(1)'s enable command.
systemd-debug-generator implements systemd.generator(7).
This page is part of the systemd (systemd system and service manager)
project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a bug
report for this manual page, see
page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2017-03-13. If you dis‐
cover any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page, or
you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
systemd 233 SYSTEMD-DEBUG-GENERATOR(8)