0    46     1   0   0:00.01 ??         0:00.01 /opt/local/bin/daemondo --label=mysql5 --start-cmd /opt/local/etc/LaunchDaemons/org.macports.mysql5/mysql5.wrapper start ; --stop-cmd /opt/local/etc/LaunchDaemons/org.macports.mysql5/mysql5.wrapper stop ; --restart-cmd /opt/local/etc/LaunchDaemons/org.macports.mysql5/mysql5.wrapper restart ; --pid=none
  0    70     1   0   0:00.01 ??         0:00.01 /bin/sh /opt/local/lib/mysql5/bin/mysqld_safe --datadir=/opt/local/var/db/mysql5 --pid-file=/opt/local/var/db/mysql5/localhost.pid
 74   100    70   0   0:09.22 ??         1:02.68 /opt/local/libexec/mysqld --basedir=/opt/local --datadir=/opt/local/var/db/mysql5 --user=mysql --pid-file=/opt/local/var/db/mysql5/localhost.pid --socket=/tmp/mysql.sock
501 66217 65266   0   0:00.00 ttys001    0:00.00 grep mysql

$ touch /opt/local/var/run/mysql5/mysqld.sock
$ vi /opt/local/etc/mysql5/my.cnf

[mysqld_safe]
socket = /opt/local/var/run/mysql5/mysqld.sock

[client]
socket = /opt/local/var/run/mysql5/mysqld.sock