Guilherme G. Piccoli e24d6d9b46 kdump-load: Add usage/help messages to this script ...

The kdump-load script is the only one that has more than a
single functionality, potentially being invoked in different ways.

With that in mind, just add a small usage/help for users'
information (thanks Emil for the suggestion).

While at it, changed the additional commands to be more friendly
and require exactly one command to be passed - changes summary:
s/initrd/create-initrd
s/clear/clear-initrd
s//load

Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>

2023-03-31 15:34:42 -03:00

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