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#!/bin/sh
#
# umountnfs.sh Unmount all network filesystems.
#
PATH=/sbin:/bin:/usr/sbin:/usr/bin
# Write a reboot record to /var/log/wtmp before unmounting
halt -w
# Ensure /proc is mounted
test -r /proc/mounts || mount -t proc proc /proc
echo "Unmounting remote filesystems..."
#
# Read the list of mounted file systems and -f umount the
# known network file systems. -f says umount it even if
# the server is unreachable. Do not attempt to umount
# the root file system. Unmount in reverse order from
# that given by /proc/mounts (otherwise it may not work).
#
unmount() {
local dev mp type opts
if read dev mp type opts
then
# recurse - unmount later items
unmount
# skip /, /proc and /dev
case "$mp" in
/) return 0;;
esac
# then unmount this, if nfs
case "$type" in
nfs|smbfs|ncpfs|cifs) umount -f -r "$mp";;
esac
fi
}
unmount </proc/mounts
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