Linux common commands-jdk and tomcat

I. Installation and configuration of the JDK

1. Download the JDK file

Go to the official website to download Linux 64-bit jdk-8u131-linux-x64.tar.gz

2. Upload to/usr/local using the FTP tool.

Use the command: TAR-ZXVF jdk-8u131-linux-x64.tar.gz for decompression

3. Configuring environment Variables (/etc/profile)

Using the command: Vim/etc/profile, place the following three lines at the end of the file

Export java_home=/usr/local/jdk1.8.0_131

Export classpath=.: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jar

Export path= $JAVA _home/bin: $PATH

4. Make the environment variable effective immediately

Use command: Source/etc/profile or. /etc/profile

JDK installation and configuration is complete, try to configure the success.

Use commands: Java-version and javac to see if they are normal.

Second, the installation and configuration of Tomcat

1. Download Tomcat

Apache-tomcat-8.0.44.tar.gz

2. Upload to/usr/local using the FTP tool.

Use the command: TAR-ZXVF apache-tomcat-8.0.44.tar.gz for decompression

3. Start Tomcat

Use command:/usr/local/apache-tomcat-8.0.44/bin/startup.sh

4. Visit: http://ip:8080

If you cannot access it, it is because the Linux firewall prohibits access to port 8080

Using the command: Service iptables stop, the CENTOS7 system will prompt the following error message.

This is because CentOS starts with the 7 default is FIREWALLD, this is based on iptables, although there is iptables core,

But Iptables's service is not installed. So you just stop FIREWALLD service:

Execute: sudo systemctl stop firewalld.service && sudo systemctl disable firewalld.service can be

viewing the Tomcat process : Ps-ef |grep Tomcat

Force shutdown process: kill-9 4401

　　

Linux common commands-jdk and tomcat