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#! /bin/sh
#
# umountfs Turn off swap and unmount all local filesystems.
#
PATH=/sbin:/bin:/usr/sbin:/usr/bin
echo "Deactivating swap..."
swapoff -a
# We leave /proc mounted.
echo "Unmounting local filesystems..."
# umount anything not a pseudo file system, and not root
# doesn't work for nested mounts at a non-root mount point
while read device mountpt fstype options
do
echo "$device" | grep -q "^/"
if [ $? -eq 0 ]; then
if [ "$mountpt" != "/" ] && [ "$mountpt" != "/dev/" ]; then
umount $mountpt
fi
fi
done</proc/mounts
mount -o remount,ro /
: exit 0
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