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cat  /etc/mysql/mariadb.cnf 
# Import all .cnf files from configuration directory  
!includedir /etc/mysql/conf.d/                                                                                                                                               
!includedir /etc/mysql/mariadb.conf.d/

The comment means that !includedir can import files which near it. Why !includedir means that ? There is no command includedir in bash!Does ! means execute?

slhck
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showkey
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1 Answers1

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!includedir is not a Bash command. Remember that you are looking at a configuration file from MariaDB. This file is not even supposed to be interpreted by Bash, but will be read by MariaDB when it starts up.

If you read the MariaDB documentation, you'll see that it's unique to MariaDB's option file syntax:

The !includedir directive can be used to include all .cnf files (and potentially .ini files) in a given directory. The option files within the directory are read in alphabetical order.

slhck
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