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38 lines
668 B
Markdown
38 lines
668 B
Markdown
## Name
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pmemdump - dump physical memory
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## Synopsis
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```**sh
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$ pmemdump [-r] <offset> <length>
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```
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## Description
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Dump a portion of the physical memory space.
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## Options
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* `-r`: Dump from /dev/mem with `read(2)` instead of doing `mmap(2)` on it.
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## Examples
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```sh
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$ pmemdump -r 983040 65536
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$ pmemdump 983040 65536
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```
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## Notes
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The pmemdump utility opens the `/dev/mem` file, and gets a mapping by doing `mmap(2)`
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on it.
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Using the `-r` flag might be useful sometimes, especially when reading from an unaligned
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reserved physical memory region when trying to `mmap(2)` `/dev/mem` on the specified
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offset fails.
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## See also
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* [`mem`(4)](help://man/4/mem)
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