You can avoid system group to setting specific groups for read access (chmod 00640) to /dev/mem /dev/kmem (maybe /dev/drum)
then limit access to respective programs to those groups or so.
this is ugly,
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Attention: This article will no longer be maintained. If you have any questions, please feel free to mail me. jgh@FreeBSD.org
Please see http://www.freebsd.org/doc/en_US.ISO8859-1/articles/freebsd-update-server/ for the updated article. It is avail…
A metadevice consists of one or more devices (slices). It can be expanded by adding slices. Then, it can be grown to fill a larger space while the file system is in use.
However, not all UNIX file systems (UFS) can be expanded this way. The conca…
Learn several ways to interact with files and get file information from the bash shell.
ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…