retry=4 # Effectively TERM, sleep 1, TERM, sleep 1, KILL, sleep 1
while ! LC_ALL=C $cmd "$mnt" 2>/dev/null; do
if type fuser >/dev/null 2>&1; then
pids="$(fuser $f_opts "$mnt" 2>/dev/null)"
timeout=60
pids="$(timeout -s KILL -k 10 "$timeout" fuser $f_opts "$mnt" 2>/dev/null)"
fi
case " $pids " in
*" $$ "*)