Create dump of mysql base:

# mysqldump -uDBUSER -pPASSWORD DBNAME > filename.sql

or
# mysqldump --user=username --password=password DBNAME > filename.sql

if you need to make dump of a few databases you can use parametr -B (or –databases):

mysqldump -uDBUSER -pPASSWORD -B DBNAME1 DBNAME2 > filename.sql

Make dump of the all Databases on host:
mysqldump -uDBUSER -pPASSWORD -A > filename.sql

If you need only dump structure of database (without data):

mysqldump -uDBUSER -pPASSWORD --no-data DBNAME > filename.sql

If you want to make limited by records mysqldump, next command especially for you (It was really cool command when I need dump and then move test copy of project with enormous mysql database):

mysqldump -uDBUSER -pPASSWORD --where="true limit 100" DBNAME > filename.sql

this command will dump your database with defined amount records in each table.

You also can change hostname without reboot by command:

#hostname howtobsd.com

but after reboot i will return on value in rc.conf

check current hostname:

hostname

log=/var/log/mysql.log

create log file:

#touch /var/log/mysql.log
#chmod 666 /var/log/mysql.log

and restart mysql-server:

#/usr/local/etc/rc.d/mysql-server restart (it can be different on you server)

That is all.

PS: I don’t recommend you use it on hight loaded servers permanently. Use it only for debugging.

Check current GMT zone in FreeBSD you can by command:

#date +%z

#ntpdate europe.pool.ntp.org

– Boot system in single user mod (key “4″)

– Remount / root in rw mode:

#mount -u /
#mount -a

– Сhange the password:

#passwd

– Insert new root password
– Reboot

apachectl restart

restart without aborting open connections:

apachectl graceful