The /etc/fstab file is used by some
programs to determine where file systems are to be mounted by
default, in which order, and which must be checked (for integrity
errors) prior to mounting. Create a new file systems table like this:
cat > ${CLFS}/etc/fstab << "EOF"
# Begin /etc/fstab
# file system mount-point type options dump fsck
# order
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
devpts /dev/pts devpts gid=4,mode=620 0 0
shm /dev/shm tmpfs defaults 0 0
# End /etc/fstab
EOF
For details on the six fields in this file, see man 5 fstab.
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.