How To Install gjar on CentOS 8

One-liner Install Command

If you are only interested in the installation command, here is a quick answer for you:

sudo yum makecache && sudo yum -y install libgcj

sudo dnf makecache && sudo dnf -y install libgcj

But if you are interested in the details with step-by-step instructions, the following information will be helpful.

What is gjar and How to Install It?

First things first, you will need access to a server or computer running CentOS 8. This guide was written specifically with a server running CentOS 8 in mind, although it should also work on older, supported versions of the operating system.

Also, make sure you are running a regular, non-root user with sudo privileges configured on your server. When you have an account available, log in as your non-root user to begin.

There are several ways to install gjar on CentOS 8. You can use (links are clickable):

In the following sections, we will describe each method in detail. You can choose one of them or refer to the recommended one.

Install gjar on CentOS 8 using dnf

First, update dnf packages database with dnf by running the next command:

sudo dnf makecache --refresh

After updating database, You can install gjar using dnf by running the following command:

sudo dnf -y install libgcj

Install gjar on CentOS 8 using yum

Because gjar is available in CentOS 8’s default repositories, it is possible to install it from these repositories using the yum packaging system.

To begin, update local packages database with yum using the following command.

sudo yum makecache --refresh

Now can install gjar package on your server/computer by running the following command:

sudo yum -y install libgcj

How to upgrade (update) a single package gjar using yum?

To update all the packages available on the system:

yum update

If you want to update a specific package like gjar in this example you should use the following command:

yum update libgcj

To downgrade a package to an earlier version:

yum downgrade libgcj

How to Upgrade gjar on CentOS 8 with dnf?

When you run the dnf update, all system packages with available updates are updated. However, if you want to upgrade a single package, then you would have to pass the package name as the argument to the dnf update command.

dnf update libgcj

How To remove gjar from CentOS 8

To uninstall only the gjar package you can execute the following command:

sudo dnf remove libgcj

Extra info and code examples

GCJ is a front end to the GCC compiler which can natively compile both Java(tm) source and bytecode files. The compiler can also generate class files. Other java development tools from Classpath are included in this package. The package contains as well a collection of wrapper scripts and symlinks. It is meant to provide a Java-SDK-like interface to the GCJ tool set.

Conclusion

You now have a full guide on how to install gjar using dnf and yum package managers. Also, we showed how to update manually as a single package and different ways to uninstall the gjar from CentOS 8.

See also: