MySQL Cookbook

Specifying Connection Parameters by Using Option Files

Problem

You don’t want to type connection parameters on the command line every time you invoke mysql.

Solution

Put the parameters in an option file.

Discussion

To avoid entering connection parameters manually, put them in an option file for mysql to read automatically. Under Unix, your personal option file is named .my.cnf in your home directory. There are also site-wide option files that administrators can use to specify parameters that apply globally to all users. You can use /etc/my.cnf or the my.cnf file in the MySQL server’s data directory. Under Windows, the option files you can use are C:\my.cnf, the my.ini file in your Windows system directory, or my.cnf in the server’s data directory.

Tip

Windows may hide filename extensions when displaying files, so a file named my.cnf may appear to be named just my. Your version of Windows may allow you to disable extension-hiding. Alternatively, issue a DIR command in a DOS window to see full names.

The following example illustrates the format used to write MySQL option files:

# general client program connection options
[client]
host=localhost
user=cbuser
password=cbpass

# options specific to the mysql program
[mysql]
no-auto-rehash
# specify pager for interactive mode
pager=/usr/bin/less

This format has the following general characteristics:

• Lines are written in groups. The first line of the group specifies the group name inside of square brackets, and the remaining lines specify options ...