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A Look at the Filesystem Hierarchy Standard 3.0

Aug 02, 2011, 21:00 (0 Talkback[s])


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"The FHS defines the basic structure of a Unix-like operating system — what the directories are, what types of files and data belong in each, and so on. This is important for application developers (so that they know to create temporary files in /tmp/ rather than in the user's home directory, for instance), but it is also important for system administrators. Not only does FHS specify where the directories go, but it specifies important properties like which directories must be mounted read-only (critical for security) and which must be available at boot time (so that vital directories are on local disks not NFS mounts that won't be available early in the boot sequence).

This type of info is particularly important for systems like Linux that do not have a single corporate owner. IBM and Sun could dictate AIX and Solaris layout without consulting anyone. Red Hat, SUSE, and Debian, on the other hand, must reach a consensus about filesystem layout or deal with "fragmentation" complaints.

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