In this post, I will not tell how to install the plugins via normal way like installing using Jenkins install plugin menu under manage Jenkins.
In this, I will tell you an unusual way to install the plugins for those who have already have the plugins in existing Jenkin now they want to replicate in another instance of Jenkins or you have already a set of the plugins.
Where are the plugins in the existing installation?
First, you need to find out your Jenkins installation directory of the existing Jenkins installation.
Now go to Jenkins’s home path of the new installation. Find out plugin folder, if it is not there then create that folder with name “plugins“
Now paste all plugins (which you have already from older Jenkins or as backup ) into the plugins folder.
After successful paste of plugins, now restart your Jenkins. If everything went fine then you can see all your plugins available in your new Jenkins setup.