Chapter 2. Installing .NET Core 3.1

To install .NET Core on RHEL 7 you need to first enable the .NET Core software repositories and install the scl tool.

Prerequisites

Installed and registered RHEL 7 with attached subscriptions.
For more information, see Registering the System and Attaching Subscriptions.

Procedure

Enable the .NET Core software repositories:
```
$ sudo subscription-manager repos --enable=rhel-7-variant-dotnet-rpms
```
Replace variant with server, workstation or hpc-node depending on what RHEL system you are running (RHEL 7 Server, RHEL 7 Workstation, or HPC Compute Node, respectively).
Verify the list of subscriptions attached to your system:
```
$ sudo subscription-manager list --consumed
```
Install the scl tool:
```
$ sudo yum install scl-utils -y
```
Install .NET Core 3.1 and all of its dependencies:
```
$ sudo yum install rh-dotnet31 -y
```
Enable the rh-dotnet31 Software Collection environment:
```
$ scl enable rh-dotnet31 bash
```
You can now run dotnet commands in this bash shell session.
If you log out, use another shell, or open up a new terminal, the dotnet command is no longer enabled.
Warning
Red Hat does not recommend permanently enabling rh-dotnet31 because it may affect other programs. For example, rh-dotnet31 includes a version of libcurl that differs from the base RHEL version. This may lead to issues in programs that do not expect a different version of libcurl. If you want to enable rh-dotnet permanently, add source scl_source enable rh-dotnet31 to your ~/.bashrc file.

Verification steps

Verify the installation:
```
$ dotnet --info
```
The output returns the relevant information about the .NET Core installation and the environment.