This is for centos7 old mirror repository

CentOS 7 Repository Fix Script.sh

#!/bin/bash

# Backup existing repo files
echo "Creating backup of existing repo files..."
cd /etc/yum.repos.d/
mkdir -p backup
mv CentOS-* backup/

# Create new CentOS-Base.repo file
echo "Creating new CentOS-Base.repo file..."
cat > /etc/yum.repos.d/CentOS-Base.repo << 'EOL'
[base]
name=CentOS-7 - Base
baseurl=https://vault.centos.org/7.9.2009/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

[updates]
name=CentOS-7 - Updates
baseurl=https://vault.centos.org/7.9.2009/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

[extras]
name=CentOS-7 - Extras
baseurl=https://vault.centos.org/7.9.2009/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
EOL

# Clean and update yum cache
echo "Cleaning yum cache..."
yum clean all

echo "Making new cache..."
yum makecache

# Install EPEL repository
echo "Installing EPEL repository..."
yum install -y epel-release

# Install nano
echo "Installing nano..."
yum install -y nano

echo "Script completed!"