Install and configure JDKTomcatMySQL in Ubuntu12.04

1. When the Ubuntu12.04 system is installed, the root user is disabled. Set the allocation: sudopasswd, and then specify the corresponding password. Suroot: Enter the new password *** to log on to the root user. 2. method 1 for setting jdk environment variables in linux # vi/etc/profile Add the following content at the end: # setjavaenvironment & nb

1. When Ubuntu 12.04 is first installed: the root user is disabled, set the assignment to sudo passwd, and then specify the corresponding password. Su root, input
The new password *** can be used to log on to the root user.

2. Set jdk environment variables in linux
Method 1,
# Vi/etc/profile
Add the following content at the end:
# Set java environment
Export JAVA_HOME =/usr/lib/java/jdk1.7.0 _ 03
Export CLASSPATH =.; $ CLASSPATH: $ JAVA_HOME/lib/dt. jar: $ JAVA_HOME/lib/tools. jar
Export PATH = $ PATH: $ JAVA_HOME/bin
Export JRE_HOME = $ JAVA_HOME/jre
Save and exit
# Source/etc/profile # make it take effect
# Set
Method 2: All users can use
Vi/etc/profile. d/java. sh
Add the following content to new java. sh:
# Set java environment
JAVA_HOME =/usr/lib/java/jdk1.7.0 _ 03
CLASSPATH =.; $ JAVA_HOME/lib/tools. jar
PATH = $ JAVA_HOME/bin: $ PATH
Export JAVA_HOME CLASSPATH PATH
Save and exit
Assign permissions to java. sh: chmod 755/etc/profile. d/java. sh
====== Below can be tested ======
# Echo $ JAVA_HOME
# Echo $ CLASSPATH
# Echo $ PATH
Check whether JDK is successful
# Java-version

3. Set Tomcat environment variables in linux
A. Configure the server code URIEncoding = "UTF-8" or URIEncoding = "GBK" as much as possible to be consistent with the project code
B. Add export TOMCAT_HOME =/usr/lib/server/apache-tomcat-7.0.27
C. Add admin user, add in tomcat-users.xml






4. decompress the archive
Tar-zxvf jdk-7u3-linux-i586.tar.gz
Tar-xvf jdk-7u3-linux-i586.tar

5. Modify the default file user
Chown shefron MySQL-5.5.rpm other chmod, chgrp

6. Ubuntu MySQL built-in and Installation
A. apt-get install mysql-server

7. Access denied for the root user in MySQL
A. #/etc/init. d/mysql stop
B. # mysqld_safe -- user = mysql -- skip-grant-tables -- skip-networking &
C. # mysql-u root mysql
D. mysql> flush privileges;
E. mysql> quit
F. #/etc/init. d/mysql restart
G. # mysql-u root-p
Enter password:
OK!

8. login and exit of MySQL users
A. # mysql-u root-p
B. # Enter password
C. mysql> quit or [Ctrl + D]

9. Create a database in MySQL and grant the database user permissions to new users.
A. mysql> create database shop;
B. mysql> grant all privileges on shop. * to shop_user @ localhost identified by "123456 ";
If you want remote access or control, you can:
1. mysql> grant all privileges on shop. * shop_user @ "%" identified by "654321 ";
Ii. vi/etc/mysql/my. cnf
Bind-address = 127.0.0.1 (Server IP)
Restart the MySQL server:/etc/init. d/mysql restart

10. MySQL database encoding settings
A. Find the my. cnf file (/etc/my. cnf or/etc/mysql/my. cnf)
B. Add default-character-set = utf8 under [client] or [mysqld] to save and exit

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