systemd-debug-generator - Generator for enabling a runtime debug shell and
masking specific units at boot
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
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
systemd-debug-generator implements systemd.generator