File set_postgresql_18.latest.sh of Package dba-postgresql-180

#!/bin/bash
#set -x
v=`ls -1d 18.? 18.?? 2>/dev/null|cut -d "." -f2 |sort -n |tail -1`
i=`ls -l 18.latest.bak* 2>/dev/null|wc -l`
test -L 18.latest && mv 18.latest 18.latest.bak${i}
rc=`ln -fs 18.${v} 18.latest`
exit $rc