MySQL – Execute Linux shell command

測試環境 CentOS8 – MariaDB 10.3.28

[root@localhost ~]# mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 10
Server version: 10.3.28-MariaDB-log MariaDB Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

SQL Shell

在 SQL Shell 下面是可以直接透過 system 指令去執行 Linux 的 Shell 程式.

MariaDB [(none)]> system bash
[root@localhost ~]# exit
exit
MariaDB [(none)]> system ls
anaconda-ks.cfg  Desktop  Documents  Downloads  Music  original-ks.cfg  Pictures  Public  temp  Templates  Videos

Stored Routines ( Procedure , Function 或是 Trigger )

不過這個 system 指令基本安全考量才不能使用在 Stored Routines ( Procedure , Function 或是 Trigger ) 上,不過可以透過 User Define Function (UDF) 的方式來做,

1. mysql-udf – https://github.com/topics/mysql-udf
   使用請參考 – https://benjr.tw/105113
2. lib_mysqludf_sys library – https://github.com/mysqludf/lib_mysqludf_sys