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mysqldatabaselinuxwindowscommand-line
Prabhu
Prabhu

Reputation: 5466

How to find the mysql data directory from command line in windows

In linux I could find the mysql installation directory with the command which mysql. But I could not find any in windows. I tried echo %path% and it resulted many paths along with path to mysql bin.

I wanted to find the mysql data directory from command line in windows for use in batch program. I would also like to find mysql data directory from linux command line. Is it possible? or how can we do that?

In my case, the mysql data directory is on the installation folder i.e. ..MYSQL\mysql server 5\data It might be installed on any drive however. I want to get it returned from the command line.

Upvotes: 211

Views: 499630

Answers (7)

hek2mgl
hek2mgl

Reputation: 158170

You can issue the following query from the command line:

mysql -uUSER -p -e 'SHOW VARIABLES WHERE Variable_Name LIKE "%dir"'

Output (on Linux):

+---------------------------+----------------------------+
| Variable_name             | Value                      |
+---------------------------+----------------------------+
| basedir                   | /usr                       |
| character_sets_dir        | /usr/share/mysql/charsets/ |
| datadir                   | /var/lib/mysql/            |
| innodb_data_home_dir      |                            |
| innodb_log_group_home_dir | ./                         |
| lc_messages_dir           | /usr/share/mysql/          |
| plugin_dir                | /usr/lib/mysql/plugin/     |
| slave_load_tmpdir         | /tmp                       |
| tmpdir                    | /tmp                       |
+---------------------------+----------------------------+

Output (on macOS Sierra):

+---------------------------+-----------------------------------------------------------+
| Variable_name             | Value                                                     |
+---------------------------+-----------------------------------------------------------+
| basedir                   | /usr/local/mysql-5.7.17-macos10.12-x86_64/                |
| character_sets_dir        | /usr/local/mysql-5.7.17-macos10.12-x86_64/share/charsets/ |
| datadir                   | /usr/local/mysql/data/                                    |
| innodb_data_home_dir      |                                                           |
| innodb_log_group_home_dir | ./                                                        |
| innodb_tmpdir             |                                                           |
| lc_messages_dir           | /usr/local/mysql-5.7.17-macos10.12-x86_64/share/          |
| plugin_dir                | /usr/local/mysql/lib/plugin/                              |
| slave_load_tmpdir         | /var/folders/zz/zyxvpxvq6csfxvn_n000009800002_/T/         |
| tmpdir                    | /var/folders/zz/zyxvpxvq6csfxvn_n000009800002_/T/         |
+---------------------------+-----------------------------------------------------------+

Or if you want only the data dir use:

mysql -uUSER -p -e 'SHOW VARIABLES WHERE Variable_Name = "datadir"'

These commands work on Windows too, but you need to invert the single and double quotes.

Btw, when executing which mysql in Linux as you told, you'll not get the installation directory on Linux. You'll only get the binary path, which is /usr/bin on Linux, but you see the mysql installation is using multiple folders to store files.

If you need the value of datadir as output, and only that, without column headers etc, but you don't have a GNU environment (awk|grep|sed ...) then use the following command line:

mysql -s -N -uUSER -p information_schema -e 'SELECT Variable_Value FROM GLOBAL_VARIABLES WHERE Variable_Name = "datadir"'

The command will select the value only from mysql's internal information_schema database and disables the tabular output and column headers.

Output on Linux:

/var/lib/mysql

Upvotes: 344

Rakib
Rakib

Reputation: 2096

Use bellow command from CLI interface

[root@localhost~]# mysqladmin variables -p<password> | grep datadir

Upvotes: 1

Eyad Arafat
Eyad Arafat

Reputation: 611

Check if the Data directory is in "C:\ProgramData\MySQL\MySQL Server 5.7\Data". This is where it is on my computer. Someone might find this helpful.

Upvotes: -1

Eugene Yarmash
Eugene Yarmash

Reputation: 150081

You can see the complete list of MySQL server options by running

mysqld --verbose --help

For example, to find out the path to the data directory on Linux, you can run:

mysqld --verbose --help | grep ^datadir

Example output:

datadir                                     /var/lib/mysql/

Upvotes: 8

Amrit Shrestha
Amrit Shrestha

Reputation: 1660

if you want to find datadir in linux or windows you can do following command

mysql -uUSER -p -e 'SHOW VARIABLES WHERE Variable_Name = "datadir"'

if you are interested to find datadir you can use grep & awk command 

mysql -uUSER -p -e 'SHOW VARIABLES WHERE Variable_Name = "datadir"' | grep 'datadir' | awk '{print $2}'

Upvotes: 4

Gigoland
Gigoland

Reputation: 1453

public function variables($variable="")
{
  return empty($variable) ? mysql_query("SHOW VARIABLES") : mysql_query("SELECT @@$variable");
}

/*get datadir*/
$res = variables("datadir");

/*or get all variables*/
$res = variables();

Upvotes: -1

As_913
As_913

Reputation: 1861

You can try this- 

mysql> select @@datadir;

PS- It works on every platform.

Upvotes: 186

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