gistfile1.sh

# ps ax | grep 3306
28723 pts/1    Sl     0:00 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/mysqld.pid --skip-external-locking --port=3306 --socket=/var/lib/mysql/mysql.sock
28930 pts/1    Sl     0:00 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --user=mysql --pid-file=/var/run/mysqld/mysqld.pid --skip-external-locking --port=3306 --socket=/var/lib/mysql/mysql.sock
29096 pts/1    R+     0:00 grep 3306
# ls /var/lib/mysql/mysql.sock
ls: cannot access /var/lib/mysql/mysql.sock: No such file or directory

# service mysql stop
Shutting down service MySQL                                                                                                                         done
# ps ax | grep 3306
28723 pts/1    Sl     0:00 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/mysqld.pid --skip-external-locking --port=3306 --socket=/var/lib/mysql/mysql.sock
29159 pts/1    S+     0:00 grep 3306
# service mysql start
Starting service MySQL warning: /var/lib/mysql/mysql.sock didn't appear within 30 seconds