File set_postgresql_16.latest.sh of Package dba-postgresql-1610

#!/bin/bash
#set -x
v=`ls -1d 16.? 16.?? 2>/dev/null|cut -d "." -f2 |sort -n |tail -1`
i=`ls -l 16.latest.bak* 2>/dev/null|wc -l`
test -L 16.latest && mv 16.latest 16.latest.bak${i}
rc=`ln -fs 16.${v} 16.latest`
exit $rc