Text in fstab page about /dev/shm

Chris Staub chris at beaker67.com
Wed Feb 22 17:42:36 PST 2006

In the "Creating /etc/fstab" section, there is this paragraph:

The /dev/shm mount point for tmpfs is included to allow enabling 
POSIX-shared memory. The kernel must have the required support built 
into it for this to work (more about this is in the next section). 
Please note that very little software currently uses POSIX-shared 
memory. Therefore, consider the /dev/shm mount point optional. For more 
information, see Documentation/filesystems/tmpfs.txt in the kernel 
source tree.

I don't really know much of anything about the subject myself, but it 
seems strange that it says /dev/shm is "optional" when it's described as 
required during the LFS system build. Is that paragraph simply out-of-date?

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