Extracting and creating war files in centos

To manipulate war files, you need a command called jar, and this command is available from openjdk-devel package.

Install openjdk-devel -y

# yum install java-1.8.0-openjdk-devel

You should be able to use jar command

# which jar

/usr/bin/jar

View the content of a war file

# jar tf sample.jar

Extract the content of a war file

# jar xf sample.jar

Create war from files

# jar cf sample.jar /path/to/files