MySQL installation steps - Linux configuration file JDK installation (II)

Installation premise ：

1、 First install the number VM Software , And a virtual machine has been successfully installed

 2、 Install well MobaXterm_personal Software , below jdk And mysql The installation will operate on this software

3、 Installation package

  The installation steps are as follows

 1、 open MobaXterm_personal Software

2、 Click on the menu in the upper left corner Session.

 3. Click on Specify username The figure icon on the right

 4. Click on new menu

 5、 enter one user name Name, Virtual machine username and password , After clicking on ok

    Here the user name is defined by itself , The virtual machine user name and password must be consistent with the account and password you set up to install the virtual machine

 

 6、 Select the user you just created , Click on ok

 7、 choice IP（ The address required to remember when installing the virtual machine ）, user name （ Just created ）, port port（ Default 22）

 8、 Click on the bar to create the connection

 9、 Interface input   mkdir /softs   --> Check bottom left Follow terminal folder（ Used to track the path ）
10、 Input cd /softs
11、 Upload the package to softs Next （ Just pull it in ）

 12、ll You can check whether the file exists

 13、 Input tar  -zxvf  jdk-8u221-linux-x64.tar.gz -C /opt  Carriage return installation

 14、 Input   vi /etc/profile

15、 Input shift+G,    Go to the last line , Input o , You can insert （ Configure environment variables ）

    Insert ：

    export JAVA_HOME=/opt/jdk1.8.0_221
    export CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar
    export PATH=/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/root/bin
    export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH

16、 Press ESC sign out , Lose again   :wq sign out  

 17、 Input source /etc/profile  Make the configuration take effect immediately

18、 Input java -version Check if it works

 19、 Input javac, See if it works