local x=
local retval=0
for x in `awk '$1 != "none" { print $2 }' /proc/mounts | sort -r`
awk '$1 != "none" { print $1,$2 }' /proc/mounts | sort -r | while read x
do
mount -n -o remount,ro ${x} &>/dev/null
retval=$((${retval} + $?))