NAME<\/a> systemd-debug-generator \u2212 Generator for enabling a runtime debug shell and masking specific units at boot<\/p>\n \/usr\/lib\/systemd\/system\u2212generators\/systemd\u2212debug\u2212generator<\/p>\n systemd\u2212debug\u2212generator is a generator that reads the kernel command line and understands three options:<\/p>\n If the systemd.mask=<\/b> or rd.systemd.mask=<\/b> option is specified and followed by a unit name, this unit is masked for the runtime, similar to the effect of systemctl<\/b>(1)’s mask<\/b> 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=<\/b> is honored only by initial RAM disk (initrd) while systemd.mask=<\/b> is honored only in the main system.<\/p>\n If the systemd.wants=<\/b> or rd.systemd.wants=<\/b> 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=<\/b> is honored only by initial RAM disk (initrd) while systemd.wants=<\/b> is honored only in the main system.<\/p>\n If the systemd.debug_shell<\/b> or rd.systemd.debug_shell<\/b> option is specified, the debug shell service “debug\u2212shell.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<\/b>(1)’s enable<\/b> command. rd.systemd.debug_shell=<\/b> is honored only by initial RAM disk (initrd) while systemd.debug_shell<\/b> is honored only in the main system.<\/p>\n
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