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1. Installing R is a problem

Why this article? Because RedHat’s warehouse source does not include R, installing R is a problem.

Quite a few articles on the web are installed in CentOS, which is very easy compared to RedHat8. Most of the RedHat installations don’t work properly, hence this article.

Of course, compared to direct install, the latter two methods need more operations, are not convenient, but it is the most convenient step at present.

R software packages are not included in the CentOS 8 core software source. We need to install R from the EPEL software source.

To install R on CentOS 8, perform the following steps:

01. Enable EPEL and PowerTools

sudo dnf install epel-release
sudo dnf config-manager --set-enabled PowerTools
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02. Installation R:

sudo yum install R
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03. Verify successful installation and print version R:

R --version
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2. Installation Method 1

Install ePEL first.

#Install ePEL extension repository, most likely not, not to change the next line, from the specified Ari cloud install. 
sudo yum install epel-release -y 

#Or manually download the RPM package 
sudo yum install -y https://mirrors.aliyun.com/epel/epel-release-latest-8.noarch.rpm 

#After epel is installed, files starting with epel will be added to '/etc/yum-pos. d' directory

sudo dnf install epel-release
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Configure the PowerTools source sudo vi /etc/ym.repos. d/ centos-powertools. repo Set the following parameters:

# CentOS-PowerTools.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client.  You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# If the mirrorlist= does not work for you, as a fall back you can try the
# remarked out baseurl= line instead.
#
#
[PowerTools]
name=CentOS-$releasever - PowerTools
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=PowerTools&infra=$infra
#baseurl=http://mirror.centos.org/$contentdir/$releasever/PowerTools/$basearch/os/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial

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Additional rpmKey:

rpmkeys --import https://www.centos.org/keys/RPM-GPG-KEY-CentOS-Official
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Activate PowerTools:

# dnf list --enablerepo PowerTools 
# dnf config-manager --set-enabled PowerTools
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Install R:

sudo yum install R -y
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Verify the installation

$ R --version
R version 4.1.1 (2021-08-10) -- "Kick Things"
Copyright (C) 2021 The R Foundation for Statistical Computing
Platform: x86_64-redhat-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under the terms of the
GNU General Public License versions 2 or 3.
For more information about these matters see
https://www.gnu.org/licenses/.

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3 Installation Method 2

Install the EPEL first by referring to the above installation or the following installation:

--- CentOS 8 --- 
sudo yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm 
sudo dnf config-manager --set-enabled PowerTools 

--- RHEL 8 --- 

sudo yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm 

sudo ARCH=$( /bin/arch ) 
sudo subscription-manager repos --enable "codeready-builder-for-rhel-8-${ARCH}-rpms"
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Direct mounting R

sudo bash -c "$(curl -L https://rstd.io/r-install)"
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Type the version you want to install, for example, 4.1.1

After installation, print the version: ${R_VERSION} and replace it with the version you installed.

/opt/R/${R_VERSION}/bin/R --version
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Add R to the PATH environment variable.

Sudo vi ~/.bashrc, add:

The export PATH = $PATH: / opt/R / 4.4.1 / bin /Copy the code

Compile the file to take effect.

$ sudo source .bashrc
$ which R/ 3.6.3 / bin/opt/R/R
$ R --version
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Nodule 8.

It took me a while to install R, so let me write it down.

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