How To Install emar 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 emscripten

sudo dnf makecache && sudo dnf -y install emscripten

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

What is emar 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 emar 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 emar 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 emar using dnf by running the following command:

sudo dnf -y install emscripten

Install emar on CentOS 8 using yum

Because emar 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 emar package on your server/computer by running the following command:

sudo yum -y install emscripten

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

To update all the packages available on the system:

yum update

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

yum update emscripten

To downgrade a package to an earlier version:

yum downgrade emscripten

How to Upgrade emar 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 emscripten

How To remove emar from CentOS 8

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

sudo dnf remove emscripten

Extra info and code examples

Emscripten is an LLVM to JavaScript compiler. It takes LLVM bitcode, also called LLVM IR (which can be generated from C/C++ using Clang, or any other language that can be converted into LLVM bitcode) and compiles that into JavaScript, which can be run on the web (or anywhere else JavaScript can run). Using Emscripten, you can * Compile C and C++ code into JavaScript and run that on the web * Run code in languages like Python as well, by compiling CPython from C to JavaScript and interpreting code in that on the web

Conclusion

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

See also: