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NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | COLOPHON |
SYSTEMD-DEBUG-GENERATOR(8) systemd-debug-generatorSYSTEMD-DEBUG-GENERATOR(8)
systemd-debug-generator - Generator for enabling a runtime debug
shell and masking specific units at boot
/usr/lib/systemd/system-generators/systemd-debug-generator
systemd-debug-generator is a generator that reads the kernel command
line and understands three options:
If the systemd.mask= or rd.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.
rd.systemd.mask= is honored only by initial RAM disk (initrd) while
systemd.mask= is honored only in the main system.
If the systemd.wants= or rd.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. rd.systemd.wants= is
honored only by initial RAM disk (initrd) while systemd.wants= is
honored only in the main system.
If the systemd.debug_shell or rd.systemd.debug_shell option is
specified, the debug shell service "debug-shell.service" is pulled
into the boot transaction and a debug shell will be spawned during
early boot. By default, /dev/tty9 is used, but a specific tty can
also be set, either with or without the /dev/ prefix. Note that the
shell may also be turned on persistently by enabling it with
systemctl(1)'s enable command. rd.systemd.debug_shell= is honored
only by initial RAM disk (initrd) while systemd.debug_shell is
honored only in the main system.
systemd-debug-generator implements systemd.generator(7).
systemd(1), systemctl(1), kernel-command-line(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
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩. This
page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2020-08-13. (At that
time, the date of the most recent commit that was found in the repos‐
itory was 2020-08-11.) If you discover 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 to man-pages@man7.org
systemd 246 SYSTEMD-DEBUG-GENERATOR(8)
Pages that refer to this page: 30-systemd-environment-d-generator(7) , kernel-command-line(7) , systemd.directives(7) , systemd.generator(7) , systemd.index(7)