mysql server HowTo - Linux / Unix Q & A from nixCraft

HowTo: Uninstall MySQL Server in Ubuntu Linux

last updated March 23, 2014 in Debian / Ubuntu, MySQL, Package Management, Ubuntu Linux

I‘m a new Ubuntu Linux user and my cloud hosting company installed MySQL server by default. I need to remove it and delete it from my server as I have no use of MySQL server. How can I uninstall MySQL on a Ubuntu based systems?

mysqldump: Copy Database Using Shell Pipes

last updated June 25, 2012 in MySQL

How do I use mysqldump command with Unix shell pipes?

[ERROR] /usr/local/libexec/mysqld: unknown variable ‘thread_concurrency=8’

last updated April 25, 2011 in MySQL

I‘m trying to set ‘thread_concurrency to 8 under Linux MySQL server. But when I try to restart the mysql server, I get the following error:

[ERROR] /usr/local/libexec/mysqld: unknown variable ‘thread_concurrency=8’

How do I fix this problem?

MySQL Import File / Database Command

last updated November 5, 2013 in Linux, MySQL, UNIX

How do I import data stored in a .sql file created by mysqldump command on Linux or UNIX like operating systems? How do I restore mysql database backup using bash shell based command line option?

ERROR 1018 (HY000): Can’t read dir of ‘./dbname/’ (errno: 13)

last updated May 28, 2010 in MySQL

When I run the following command at mysql> I get an error which read as follows:

mysql> use dbname;
mysql> show tables;
ERROR 1018 (HY000): Can’t read dir of ‘./dbname/’ (errno: 13)

How do I fix this problem under Debian Linux?

Lost MySQL Admin Password

last updated March 25, 2010 in MySQL

I lost mysql admin (root user) password. How do I reset a lost MySQL admin (root) password under UNIX or Linux or BSD operating systems?

MySQL Bin Files Eating Lots of Disk Space

last updated December 18, 2008 in CentOS, Debian / Ubuntu, File system, Linux, MySQL, Storage, Ubuntu Linux, UNIX

Q. I get a large amount of bin files in the MySQL data directory called “server-bin.n” or mysql-bin.00000n, where n is a number that increments. What is MySQL Binary Log? How do I stop these files being created?