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Show raw contents of a file or memory. When option --skip is given, ‘offset’ number of bytes are skipped from the start of the device or file given. And --length allows specifying a maximum number of bytes to be shown.
If given the special device named ‘(mem)’, then the ‘offset’ given to --skip is treated as the address of a memory location to dump from.
Note: The dumping of RAM memory (by the (mem) argument) is not allowed when when lockdown is enforced (see Lockdown when booting on a secure setup). The dumping of disk or file data is allowed when lockdown is enforced.