Limit the minute cron to minimum 15 minutes

#!/bin/bash
ls -1 /var/spool/cron/| grep -v '^root'|while read u;
do
        cat /var/spool/cron/${u}|\
        awk '{print $1":"$2":"$3":"$4":"$5":"$NF}'|\
        while read entry;
        do
                mn=$(echo ${entry}|awk -F':' '{print $1}');
                if [[ ${mn} == "*" || ${mn} =~ "\*\/[0-14]$" ]];
                then
                        echo "Minutely script found -> ${u}";
                        echo "Changing to normal"

indexsed=1
sed -i 's#^*[^ ][0-1][0-4]#*/15#'$indexsed /var/spool/cron/${u}
sed -i 's#^*[^ ][0-9] #*/15 #'$indexsed /var/spool/cron/${u}
sed -i 's#^[0-15] #*/15 #' /var/spool/cron/${u}
sed -i 's#^[:*:] #*/15 #' /var/spool/cron/${u}
              fi;
        done;
done