Under Linux, check to see if MySQL, Apache is installed, and uninstalled.
Instruction Ps-ef|grep MySQL Results
- Root 17659 1 0 ? XX: xx /bin/sh/usr/bin/mysqld_safe--datadir=/var/lib/mysql-- Socket=/var/lib/mysql/mysql.sock--log-error=/var/log/mysqld.log--pid-file=/var/run/mysqld/mysqld.pid
- MySQL 17719 17659 0 ? From: £ /usr/libexec/mysqld--basedir=/usr--datadir=/var/lib/mysql --user=mysql--pid-file=/var/run/mysqld/mysqld.pid--skip-external-locking--socket=/var/lib/mysql/mysql.sock
Usr/bin/mysql refers to: The running path of MySQL
Var/lib/mysql refers to: The storage path of MySQL database files
Usr/lib/mysql refers to: MySQL installation path
The 1,mysql daemon is mysqld
If it is already installed:
[[Email protected] ~]# service mysqld start
Start MySQL: [OK]
If you do not have the installation:
[[Email protected] ~]# service mysqld start
MYSQLD: Unrecognized service
You can see if your service has been added to Linux.
[Email protected] ~]# chkconfig--list mysqld
Mysqld 0: Off 1: Off 2: Off 3: Off 4: Off 5: Enable 6: Off
There is no installation:
[Email protected] ~]# chkconfig--list mysqld
Error reading information in MYSQLD service, no file or directory
Once you have started the service, you can check to see if the server is running
[Email protected] ~]# Ps-el | grep mysqld
4 S 0 1796 1 0 0-1513 wait? 00:00:00 Mysqld_safe
4 S 27 1856 1796 0 78 0-34055-? 00:00:00 mysqld
[Email protected] ~]#
If you see one, it means the server is installed ~ ~
See if Apache is installed and versioned under Linux
If the pass is installed through the RPM package, use the following command directly:
Rpm-q httpd
You can also use the following two ways:
Httpd-v
Apachectl-v
Uninstall MySQL method under Linux
A. Find the installed MYSLQ version:
#rpm-qa | grep MySQL (note case, if MySQL does not change MySQL)
Show:
[Email protected] ~]# Rpm-qa | grep MySQL
mysql-5.0.77-4.el5_4.2
mysql-server-5.0.77-4.el5_4.2
Php-mysql-5.2.13-1.el5.art
Copy Code
On the screen will display the installed MySQL package name such as: mysql-5.0.77-4.el5_4.2;
Uninstall the search for the package name:
#rpm-e–nodeps mysql-5.0.77-4.el5_4.2 (nodeps indicates forced deletion)
Tips
Error:package–nodeps is not installed
Error:package mysql-.0.77-4.e15_.2 is not installed
Linux View MySQL installation path
First, view the file installation path
Since there is more than one place to install the software, all the paths (addresses) that are first said to view the file installation.
Take MySQL for example here. For example, I installed MySQL, but do not know where the files are installed, in which folders, you can use the following command to view all the file path
In Terminal input:
Whereis MySQL
Enter, if you installed MySQL, will show the file installation address, such as my display (the installation address may be different)
[[email protected] ~]# Whereis MySQL
MySQL:/usr/bin/mysql/usr/lib/mysql/usr/share/mysql/usr/share/man/man1/mysql.1.gz
Second, the path of the query running file (folder address)
If you just query the file's running file address, you can use the following command (or MySQL, for example):
which MySQL
Terminal display:
[[email protected] ~]# which MySQL
/usr/bin/mysql
Modify the default password
GRANT all privileges on * * to ' root ' @ ' host ' identified by ' password ' with GRANT OPTION;
FLUSH privileges;
SET PASSWORD for ' root ' @ ' host ' = PASSWORD (' PASSWORD ');
Under Linux check MySQL, Apache installation, installation, uninstall and other operations