Installing the Web development environment under Linux

The following uses the Linux CentOS system

First, the installation of the JDK

1. Download jdk-8u111-linux-x64.tar.gz

2. Unzip the file and copy the extracted files to the/usr/local/jdk1.7 directory.

Here the jdk1.7 directory is the content of my extracted files.

3. Configure Environment variables

Enter the ETC directory to edit the profile

File contents:

View Code

To add a configuration about the JDK environment variable: Add the following code at the end of the file

Java_home= "/usr/local/jdk1.7" class_path= "$JAVA _home/lib: $JAVA _home/jre/lib" path= ".: $PATH: $JAVA _home/bin"
Export Java_home

4. Test whether the installation is successful

A. Make the changed file take effect immediately; Execute command: source/etc/profile

B. Input command java-version results

second, the installation of Tomcat

1. Download Tomcat apache-tomcat-7.0.70.tar.gz

2. Move the extracted files to/usr/local/tomcat1.7

3. Configure Environment variables

Add the following at the end of the/etc/profile file

Catalina_home= "/usr/local/tomcat1.7" Export  catalina_home

4. Test whether Tomcat is installed successfully

A. Make the changed file take effect immediately; Execute command: source/etc/profile

B. Enter the Tomcat bin directory to execute the command./startup.sh

C. Visit 127.0.0.1:8080 to see if the Tomcat home page appears

In general, the environment variables of JDK and Tomcat we will write together at the end of the/etc/profile file, add the following:

Java_home= "/usr/local/jdk1.7" class_path= "$JAVA _home/lib: $JAVA _home/jre/lib" path= ".: $PATH: $JAVA _home/bin" Catalina_home= "/usr/local/tomcat1.7" Export Java_home catalina_home

Three, open port

Centos 7 uses FIREWALLD instead of the original iptables. The following records how to open a Linux port using FIREWALLD:

1. Open Port Execution command: firewall-cmd--zone=public--add-port=80/tcp--permanent command meaning:--zone #作用域--add-port=80/tcp #添加端口 in the format: Port/ Communication protocol--permanent #永久生效 without this parameter restart after 2, restart Firewall command: Firewall-cmd--reload

Iv. Viewing tomact logs

Command:
View Tomcat run log tail-f catalina.out
View logs by keyword search Cat Jeewx-2015-09-20.log | grep Verification Code
View fixed time logs Cat Jeewx-2015-09-20.log | grep ' 2015-09-20 18:50:15 '
View the last 50 rows of logs tail-n 50-f catalina.out
Description :
Cat Displays the entire file
Tail tail command to display the end lines of a text file
Head is viewed from the head of the text file, and the head command is used to view the beginning of a text file
More view logs as percentages
Less is similar to more, but less supports flipping through files before and after

Installing the Web development environment under Linux