rsyslog loses some messages
You write your good program to use the rsyslogd installed on your system. You would have a bunch of log lines, but you can't see any. Check this:
Fekete Zoltán Tue, 12/04/2018 - 07:35
Extract one database from mysql/mariadb full dump

Save this script into an sh file:

#!/usr/bin/env bash


SED_FILTER="/^-- Current Database: \`$DBNAME\`/,/^-- Current Database: /p"

sed -n "$SED_FILTER" $INFILE > $DBNAME.sql

echo "Dump is ready: $DBNAME.sql"

exit 0

Run as :

$ sh script_name dbname full_dump_file
Fekete Zoltán Thu, 07/26/2018 - 13:51
List foreign keys of a referenced table in mysql or mariadb
mysql> select constraint_name, table_name
       from information_schema.key_column_usage
       where referenced_table_name = '<TABLE_NAME>';
Fekete Zoltán Mon, 12/18/2017 - 10:17