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39 lines
1.5 KiB
Markdown
39 lines
1.5 KiB
Markdown
Tips & Tricks with the kernel cmdline
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=====================================
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This document summarizes the different boot parameters that can be
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passed on the Linux kernel command line. Not just limited to Finit.
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* `debug`, or `--debug`
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Enable debug mode. The former syntax also enable kernel debug, and
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the latter only in Finit. Debug messages are printed to the console
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until a syslog daemon has been started.
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* `init=/bin/sh`
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Bypass system default init and tell kernel to start a shell. Note,
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this shell is very limited and does not support signals and has no
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job control. Recommend using, and modifying, `rescue` mode instead.
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* `panic=SEC`
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By default the kernel does not reboot after a kernel panic. This
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setting will cause a kernel reboot after SEC seconds.
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* `quiet`
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Suppress kernel logging to console, except for warnings and errors.
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* `rescue`
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Start Finit rescue mode; no network, no `fsck` of file systems in
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`/etc/fstab`, no `/etc/rc.local`, no `runparts`. The configuration
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is read from `/etc/rescue.conf`, can be modified by the operator.
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* `single`, or `S`
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Single user mode, runlevel 1, in Finit. Useful to debug problems with
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the regular runlevel. All services and TTYs in `[1]` will be started,
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so a `tty [1] @console nologin` configuration presents you with a
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root console without login.
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* `splash`
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Display Finit splash screen with progress at bootstrap and shutdown.
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For more on kernel boot paramaters, see the man page `bootparam(7)`.
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