Mac OS X 10.6 snow leopard uses the bash shell by default. If you install MySQL from the disk image (dmg) from http://dev.mysql.com/downloads/, you can make it easy to access the mysql binary from the command line by adding it to your bash path.
Open terminal, and type:
echo 'export PATH=/usr/local/mysql/bin:$PATH' >> ~/.bash_profile
This adds the default location of the MySQL binary to your shell environment.
Then, you need to force the system to reload your .bash_profile file. Again, from terminal, enter:
You can check your environment variables by typing in terminal:
Now, to access MySQL from the command line, you only need enter: