I just installed mysql 5.6 in a new CentOS 7 linux installation. I want to use the mysql command line client that I have been used to using in windows, but I cannot seem to find it. Is there a mysql command line client for linux? If so, how do I make sure that I have it? And how do I open it up in the GUI?
You can open MySql command line utility using following command
mysql -u user_name -p
It will ask for password for user_name. If password is not set call as follows
mysql -u user_name
First make sure the service is running :
sudo systemctl start mysqld
Then make sure to run the security script that will remove some dangerous defaults and lock down access to our database system a little bit.
sudo mysql_secure_installation
Now you can use the command line tool
mysql --user=user_name --password=your_password db_name
Related
I'm used to having tab-completion for mysql keywords, database names etc in mysql, but in my freshly installed mysql (via 'apt-get install mysql-server') it only works for table names, not database names.
I am supplying the --auto-rehash option when starting the mysql command line client interface. I'm aware that I can set this as a default via my.cnf, but I want to get it working first.
The mysql docs tell me that the auto-rehash feature "requires a MySQL client that is compiled with the readline library."
'aptitude show mysql-client' tells me that I have 5.5.43-0ubuntu0.14.04.1.
For debugging purposes, how can I know if my mysql-client has readline, and if not, how do I get one that does?
Resolved: I wasn't specifying a database name when invoking the mysql command line interface!
Auto-completion works as expected if I go in as:
mysql -u root -p mysql # or
mysql -u root -p mydatabase
as opposed to:
mysql -u root -p
(and --auto-rehash clearly is on by default as per the docs)
i have downloaded and installed mySQL my double clicking on its icon. It was installed successfully.
When i goto startup and preference i see the icon of mysql added and when i click on it i see a screen where it says 'MySQL server instance is running'.
But when i open terminal and cd to /usr/local/mysql and then when i type sudo ./bin/mysqld_safe i was prompted for a password. and i have not added a password when i installed mySQL, so i tried leaving it blank, and then i tried various passwords to login but all attempts failed.
So now i need to know how to login to mySQL via the terminal ?
mysql version - 5.5.24-osx10.6x86_64
my Mac OS - 10.7.3
What I found installing mysql on MacOs, there are a few differences. One is that it installs it without a password. The other thing is that it by default allows for anonymous logins.
Use this to set the password:
mysqladmin -u root -h localhost password yourpassword
You can remove anonymous logins this way:
shell> mysql -u root -p
Enter password: (enter root password here)
mysql> DROP USER ''#'localhost';
mysql> DROP USER ''#'host_name';
The other thing is that I found that the install does not modify the path variable. What I did to run mysql from the command line was to add /usr/local/mysql/bin to path by adding it to /etc/paths or /etc/paths.d . This may be what you need in order to run mysql. Like someone said in the comments, mysqld_safe is one way to start the mysql server, and it seems that is already set to run.
Here are specific instructions to add something to /etc/paths.d
$ cd /etc/paths.d
$ cat > mysql
/usr/local/bin/mysql
(and then type Ctrl-D
that should put a file there)
you may have to sudo if you do not have permissions.
The sudo command, by default, lets anyone in the admin group run a command as root by giving his own password. That's why it asked for your password when you typed "sudo ./bin/mysqld_safe". It has nothing whatsoever to do with mysql.
If you don't have a password, you cannot use sudo in the default configuration. Either give yourself a password, or edit the sudoers file. (I would strongly suggest the former over the latter, especially if you have no idea what sudo does.)
For more information, type "man sudo" (and then "man sudoers") from your Terminal.
Meanwhile, the reason "it says -bash: mysql: command not found when i type mysql in the terminal" is because you've clearly installed it into /usr/local/mysql/bin/mysql, and that isn't on your path. If it were on your path, you could have just done "sudo mysqld_safe" above, instead of "sudo ./bin/mysqld_safe". Since it's not, you have to do "./bin/mysqld_safe".
For more information, consult a good primer on the Unix shell.
Finally, if you've got the mysql daemon running, and are trying to start the client, it's "mysql" that you want to run, not "mysqld_safe".
I am new to both linux and also mysql but somehow by obtaining help from net I have installed mysql v5.5 on redhat. It starts fine, I have confirmed this by running command:
"/etc/init.d/mysqld status"
But I am not able to change password using command:
mysqladmin -u root password 'new-password'
It gives error : bash: mysqladmin: command not found.
I tried searching mysqladmin by using command "find / -name mysqladmin" but it returned no result
All I can search on net is adding to path '/bin:/usr/local/mysql/bin' but directory structure after installation mysql v5.5 has changed. There is no such directory like /usr/bin/local/mysql now.
please help me with how to run mysql after changing root's password.
first of all see what MySQL packages are installed
rpm -qa | grep -i mysql
Second, try using locate in order to find the tool path
BTW,
According to pbone mysqladmin is provided by mysql-client (rather than mysql) as it was on older cackeages
I can successfully connect to MySQL from a DOS prompt, but when I try to connect from cygwin, it just hangs.
$/cygdrive/c/Program\ Files/MySQL/MySQL\ Server\ 5.1/bin/mysql -u root -p
What's wrong?
I just came across this, and when I read someone's mention of it being a windows/DOS command that you run in cygwin I did a which mysql and that gave me:
$ which mysql
/cygdrive/c/Program Files/MySQL/MySQL Server 5.5/bin/mysql
So I ran the cygwin Setup.exe searched for "mysql" and installed the latest "mysql client". Now which mysql looks like:
$ which mysql
/usr/bin/mysql
And the MySQL command works in cygwin :)
Though it's an old question, it would be nice to have the actual answer here, as people (like myself) might still stumble across it.
If your attempts to run the MySQL client from Cygwin return the following error:
$ mysql -u root -p
Enter password:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysql.sock' (2)
Then you can fix it by adding the explicit -h 127.0.0.1 options to the command line, as in:
$ mysql -u root -p -h 127.0.0.1
Updates based on comments:
To avoid specifying -h 127.0.0.1 on the command line every time you connect, you can add:
[client]
host=127.0.0.1
to the file /etc/my.cnf
On some installations of Cygwin, specifying the host with -h might not be enough. If so, try also specifying:
--protocol=tcp
or add
protocol=tcp
to the config file.
Assuming that you have a native Windows build of MySQL, there is a terminal emulation incompatibility between DOS (command prompt) windows and bash. The prompt for mysql isn't showing up.
To confirm this, type a command and return - it will probably work, but the prompt and the echo of the command (what you're typing) is getting lost.
There may be a workaround in either the CYGWIN sytem properties or in bash, but I've never taken the time to work this one out.
Other answers lack the following key detail:
Cygwin has two shells:
Default: c:\cygwin\bin\mintty.exe
Basic: c:\cygwin\Cygwin.bat (which launches c:\cygwin\bin\bash.exe)
The Win32 MySQL can write properly to #2, but not #1, because Win32 MySQL cannot probe stdin properly (thanks #PeterNore)
Want to know if you're using Win32 MySQL? Use which, e.g.
$ which mysql
/cygdrive/c/Program Files/MySQL/MySQL Server 5.1/bin/mysql
Bonus: Cygwin guide to overcoming path problems (thanks #Dustin)
I posted a solution/workaround here:
enter key sometimes not recognized in windows apps under cygwin
Run bash from the cmd.exe executable and then mysql will work inside bash.
Create a shortcut for cmd.exe on your desktop.
Open up the properties for the shortcut and change the startup directory to the cygwin bin directory (usually C:\cygwin\bin).
Add "/c bash.exe" to the end of the command in the target parameter.
This will run bash under the windows cmd.exe environment and when you attempt to run mysql it will execute as you would expect. This is working under windows 7 but has not been tested in any other version.
Put cygwin bin directory in path env variable.
Use command window by running cmd
Run bash -l in cmd window
Then MySQL can be run without problem.
Svend Hansen's answer is the right one:
Install windows mysql server files (from mysql-5.5.25-win32.msi for example)
Install Cygwin mysql client with cygwin installer (setup.exe)
Connect to your server in a cygwin window using cygwin client "mysql -u[user] -p[Password] -h[host]", in my case "mysql -uroot -pXXXX -h127.0.0.1"
I think that when the question was posted, the cygwin setup did not provide mysql components, which is solved now.
Althoug Svend Hansen answer has some points, another thing is the PATH in Environment variables - if the path to mysql is before that of cygwin
which mysql
will show
/cygdrive/c/Program Files/MySQL/MySQL Server 5.5/bin/mysql
otherwise it will show the cygwin client.
As reference Wikipedia says:
Some programs may add their directory to the front of the PATH
variable's content during installation, to speed up the search process
and/or override OS commands.
Download Cygwin
Install mysql client app
create an alias in .bashrc file
alias mysql='mysql -h 127.0.0.1'
execute source .bashrc
Now you can connect to mysql
mysql -u user -p
I have created a semi-fix for this that satisfies me.
I ran cygwin.bat in cmd.exe, then typing mysql in- everything worked fine.
I realized right there that the problem was mintty.
Easy solution? Download Console2, and under settings you can point
it to the cygwin shell. Restart Console2, run mysql and the output
appears.
This is advantageous anyways, because Console2 has a more robust interface/customization than Mintty. I really like the transparency and color mapping options.
Do This:
just copy ur mysql.exe from C:\Program Files\MySQL\MySQL Server 5.5\bin
paste this mysql.exe in C:\cygwin\usr\local\bin
now run which mysql, It will
Disclaimer: The following solved this issue for me under MinTTY on MinGW/MSYS. From research, I believe this same root cause affects Cygwin as well.
Answer is posted here: https://stackoverflow.com/a/23164362/1034436
In a nutshell, you'll need to prepend your mysql command with winpty's console.exe (or have aliases that does so). This solution worked with native Windows MySQL executables and not a special cygwin/mingw build. You do, however, have to compile winpty, but that was simple and painless, and worked as per their documentation for me.
Note: This also solved my issue with several other native Windows console applications, namely Python and Mercurial with OpenSSH.
Reinstall cygwin and during reinstallation search for mysql in packages, install the mysql client and then it would work fine.
Found this question today 2018-03-18 looking for some answers to
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysql.sock' (2 "No such file or directory")
The file /etc/my.conf references config files in /etc/my.cnf.d
I added this to /etc/my.cnf.d/client.cnf:
[client]
host=127.0.0.1
protocol=tcp
After that I was able to access the local windows MySQL instance from a cygwin terminal using mysql -u root -p
I can successfully connect to MySQL from a DOS prompt, but when I try to connect from cygwin, it just hangs.
$/cygdrive/c/Program\ Files/MySQL/MySQL\ Server\ 5.1/bin/mysql -u root -p
What's wrong?
I just came across this, and when I read someone's mention of it being a windows/DOS command that you run in cygwin I did a which mysql and that gave me:
$ which mysql
/cygdrive/c/Program Files/MySQL/MySQL Server 5.5/bin/mysql
So I ran the cygwin Setup.exe searched for "mysql" and installed the latest "mysql client". Now which mysql looks like:
$ which mysql
/usr/bin/mysql
And the MySQL command works in cygwin :)
Though it's an old question, it would be nice to have the actual answer here, as people (like myself) might still stumble across it.
If your attempts to run the MySQL client from Cygwin return the following error:
$ mysql -u root -p
Enter password:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysql.sock' (2)
Then you can fix it by adding the explicit -h 127.0.0.1 options to the command line, as in:
$ mysql -u root -p -h 127.0.0.1
Updates based on comments:
To avoid specifying -h 127.0.0.1 on the command line every time you connect, you can add:
[client]
host=127.0.0.1
to the file /etc/my.cnf
On some installations of Cygwin, specifying the host with -h might not be enough. If so, try also specifying:
--protocol=tcp
or add
protocol=tcp
to the config file.
Assuming that you have a native Windows build of MySQL, there is a terminal emulation incompatibility between DOS (command prompt) windows and bash. The prompt for mysql isn't showing up.
To confirm this, type a command and return - it will probably work, but the prompt and the echo of the command (what you're typing) is getting lost.
There may be a workaround in either the CYGWIN sytem properties or in bash, but I've never taken the time to work this one out.
Other answers lack the following key detail:
Cygwin has two shells:
Default: c:\cygwin\bin\mintty.exe
Basic: c:\cygwin\Cygwin.bat (which launches c:\cygwin\bin\bash.exe)
The Win32 MySQL can write properly to #2, but not #1, because Win32 MySQL cannot probe stdin properly (thanks #PeterNore)
Want to know if you're using Win32 MySQL? Use which, e.g.
$ which mysql
/cygdrive/c/Program Files/MySQL/MySQL Server 5.1/bin/mysql
Bonus: Cygwin guide to overcoming path problems (thanks #Dustin)
I posted a solution/workaround here:
enter key sometimes not recognized in windows apps under cygwin
Run bash from the cmd.exe executable and then mysql will work inside bash.
Create a shortcut for cmd.exe on your desktop.
Open up the properties for the shortcut and change the startup directory to the cygwin bin directory (usually C:\cygwin\bin).
Add "/c bash.exe" to the end of the command in the target parameter.
This will run bash under the windows cmd.exe environment and when you attempt to run mysql it will execute as you would expect. This is working under windows 7 but has not been tested in any other version.
Put cygwin bin directory in path env variable.
Use command window by running cmd
Run bash -l in cmd window
Then MySQL can be run without problem.
Svend Hansen's answer is the right one:
Install windows mysql server files (from mysql-5.5.25-win32.msi for example)
Install Cygwin mysql client with cygwin installer (setup.exe)
Connect to your server in a cygwin window using cygwin client "mysql -u[user] -p[Password] -h[host]", in my case "mysql -uroot -pXXXX -h127.0.0.1"
I think that when the question was posted, the cygwin setup did not provide mysql components, which is solved now.
Althoug Svend Hansen answer has some points, another thing is the PATH in Environment variables - if the path to mysql is before that of cygwin
which mysql
will show
/cygdrive/c/Program Files/MySQL/MySQL Server 5.5/bin/mysql
otherwise it will show the cygwin client.
As reference Wikipedia says:
Some programs may add their directory to the front of the PATH
variable's content during installation, to speed up the search process
and/or override OS commands.
Download Cygwin
Install mysql client app
create an alias in .bashrc file
alias mysql='mysql -h 127.0.0.1'
execute source .bashrc
Now you can connect to mysql
mysql -u user -p
I have created a semi-fix for this that satisfies me.
I ran cygwin.bat in cmd.exe, then typing mysql in- everything worked fine.
I realized right there that the problem was mintty.
Easy solution? Download Console2, and under settings you can point
it to the cygwin shell. Restart Console2, run mysql and the output
appears.
This is advantageous anyways, because Console2 has a more robust interface/customization than Mintty. I really like the transparency and color mapping options.
Do This:
just copy ur mysql.exe from C:\Program Files\MySQL\MySQL Server 5.5\bin
paste this mysql.exe in C:\cygwin\usr\local\bin
now run which mysql, It will
Disclaimer: The following solved this issue for me under MinTTY on MinGW/MSYS. From research, I believe this same root cause affects Cygwin as well.
Answer is posted here: https://stackoverflow.com/a/23164362/1034436
In a nutshell, you'll need to prepend your mysql command with winpty's console.exe (or have aliases that does so). This solution worked with native Windows MySQL executables and not a special cygwin/mingw build. You do, however, have to compile winpty, but that was simple and painless, and worked as per their documentation for me.
Note: This also solved my issue with several other native Windows console applications, namely Python and Mercurial with OpenSSH.
Reinstall cygwin and during reinstallation search for mysql in packages, install the mysql client and then it would work fine.
Found this question today 2018-03-18 looking for some answers to
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysql.sock' (2 "No such file or directory")
The file /etc/my.conf references config files in /etc/my.cnf.d
I added this to /etc/my.cnf.d/client.cnf:
[client]
host=127.0.0.1
protocol=tcp
After that I was able to access the local windows MySQL instance from a cygwin terminal using mysql -u root -p