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4
README.md
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README.md
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Rocky Tools
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===========
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Various scripts and tools that we find useful, whether we use them or they are made for public consumption.
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centos2rocky.sh
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centos2rocky.sh
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#!/bin/bash
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# label <label@rockylinux.org>
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# Supports only CentOS 8.3
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set -e
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unset CDPATH
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if [ "$(id -u)" -ne 0 ]; then
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echo "You must run this script as root."
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echo "Either use sudo or 'su -c ${0}'"
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fi
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SUPPORTED_RELEASE="8.3"
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SUPPORTED_MAJOR="8"
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current_url=https://mirror.rockylinux.org/rocky
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# These are packages that can be swapped safely over and will have more added over time.
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packages_to_swap=(
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centos-backgrounds \
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centos-indexhtml \
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centos-repos \
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centos-logos \
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centos-gpg-keys \
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centos-linux-release)
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# Release packages that are part of SIG's should be listed below when they are available.
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#sigs_to_swap=()
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# Defaults
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list_enabled=("$(yum repolist enabled | awk '!/repo/ {print $1}')")
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enabled_modules=("$(dnf module list --enabled | grep rhel | awk '{print $1}')")
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convert_info_dir=/root/convert
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reinstall_all_rpms=false
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verify_all_rpms=false
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usage() {
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echo "Usage: ${0##*/} [OPTIONS]"
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echo
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echo "Options:"
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echo "-h displays this help"
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echo "-r Converts to rocky"
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echo "-V Verifies switch"
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echo "-R Reinstall all packages"
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echo " !! USE WITH CAUTION !!"
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exit 1
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} >&2
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exit_message() {
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echo "$1"
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final_message
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exit 1
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} >&2
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final_message() {
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echo "An error occurred while we were attempting to convert your system to Rocky Linux. Your system may be unstable. Script will now exit to prevent possible damage."
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}
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## The actual work
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bin_hash() {
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hash "$1" >/dev/null 2>&1
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}
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bin_check() {
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if ! bin_hash "$1"; then
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exit_message "'${1}' command not found. Please ensure you are running bash or that your PATH is set correctly."
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fi
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}
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generate_rpm_info() {
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mkdir /root/convert
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echo "Creating a list of RPMs installed: $1"
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rpm -qa --qf "%{NAME}|%{VERSION}|%{RELEASE}|%{INSTALLTIME}|%{VENDOR}|%{BUILDTIME}|%{BUILDHOST}|%{SOURCERPM}|%{LICENSE}|%{PACKAGER}\n" | sort > "${convert_info_dir}/$(hostname)-rpm-list-$1.log"
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echo "Verifying RPMs installed against RPM database: $1"
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rpm -Va | sort -k3 > "${convert_info_dir}/$(hostname)-rpm-list-verified-$1.log"
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}
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package_swaps() {
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rpm -e --nodeps "${packages_to_swap[@]}"
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rpm -ihv ${current_url}/${SUPPORTED_RELEASE}/BaseOS/x86_64/os/Packages/rocky-release-${SUPPORTED_RELEASE}-1.el8.x86_64.rpm \
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${current_url}/${SUPPORTED_RELEASE}/BaseOS/x86_64/os/Packages/rocky-repos-${SUPPORTED_MAJOR}-1.el8.x86_64.rpm
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if [ $? -eq 0 ]; then
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echo "Removing dnf cache"
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rm -rf /var/cache/{yum,dnf}
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echo "Ensuring repos are enabled before the package swap"
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dnf config-manager --set-enabled "${list_enabled[@]}"
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dnf distro-sync -y
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else
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exit_message "We failed to install the release package."
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fi
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}
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sig_swaps() {
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exit_message "Not Available"
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}
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module_check() {
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echo "Finding our modules that are enabled"
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for module in "${enabled_modules[@]}"; do
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case ${module} in
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container-tools|go-toolset|jmc|llvm-toolset|rust-toolset|virt)
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;;
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*)
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unknown_modules+=("${module}")
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;;
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esac
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done
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if [ ${#unknown_modules[@]} -gt 0 ]; then
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echo "There are some modules that are unsure of how to handle. This normally shouldn't happen. Do you want to resolve this yourself (Yes) or continue (No)?"
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select yn in "Yes" "No"; do
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case $yn in
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Yes)
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echo "Ensure how to switch modules, so we are leaving."
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exit 1
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;;
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No)
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break
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;;
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esac
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done
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fi
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}
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# This is just in case. There is a likelihood this will have to be done.
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module_fix() {
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for module in "${enabled_modules[@]}"; do
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dnf module reset -y "${module}"
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case ${module} in
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container-tools|go-toolset|jmc|llvm-toolset|rust-toolset|virt)
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dnf module install "${module}" -y
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;;
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*)
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echo "Unsure how to deal with the module presented."
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;;
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esac
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# Final update
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dnf update -y
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done
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}
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## End actual work
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while getopts "hrVR" option; do
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case "$option" in
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h)
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usage
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;;
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r)
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reinstall_all_rpms=true
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;;
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V)
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verify_all_rpms=true
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;;
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R)
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reinstall_all_rpms=true
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;;
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*)
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echo "Invalid switch."
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usage
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;;
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esac
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done
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echo "Ensuring rpm, yum, and curl are here."
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for pkg in rpm yum curl; do
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bin_check "${pkg}"
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done
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echo "Ensuring your version of CentOS is supported"
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if ! old_release=$(rpm -q --whatprovides /etc/redhat-release); then
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exit_message "You are not running a supported distribution."
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fi
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if [ "$(echo "${old_release}" | wc -l)" -ne 1 ]; then
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exit_message "You seem to have package issues. More than one package provides redhat-release."
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fi
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if ! grep ${SUPPORTED_RELEASE} -q /etc/redhat-release; then
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exit_message "${SUPPORTED_RELEASE} is only supported for conversion at this time. Stream is not supported."
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fi
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if "${verify_all_rpms}"; then
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generate_rpm_info begin
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fi
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case "${old_release}" in
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centos-linux-release*);;
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rocky-release*)
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exit_message "You are already running Rocky."
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;;
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*)
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exit_message "You are running an unsupported distribution. Good bye."
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esac
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# Check our modules before a swap
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module_check
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# Actually do the swap and distro-sync
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package_swaps
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# Fix up modules
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module_fix
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# Warning, this is potentially dangerous.
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if "${reinstall_all_rpms}"; then
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echo "!! THIS MAY CAUSE ISSUES WITH YOUR SYSTEM !!"
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rpm_list=("$(rpm -qa --qf "%{NAME}-%{VERSION}-%{RELEASE} %{VENDOR}\n" | grep CentOS | awk '{print $1}')")
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if [[ -n "${rpm_list[*]}" ]]; then
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echo "Reinstalling rpms: ${rpm_list[*]}"
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dnf reinstall "${rpm_list[@]}" -y
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fi
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non_rocky_rpm=("$(rpm -qa --qf "%{NAME}-%{VERSION}-%{RELEASE}|%{VENDOR}|%{PACKAGER}\n" |grep -iv Rocky)")
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if [[ -n ${non_rocky_rpm[*]} ]]; then
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echo "Non-Rocky packages are installed. This is generally not an issue. If you see centos packages, you may need to address them and file a bug report at https://bugs.rockylinux.org"
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printf '\t%s\n' "${non_rocky_rpm[@]}"
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fi
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fi
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if "${verify_all_rpms}"; then
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generate_rpm_info finish
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echo "You may review the following files:"
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find /root/convert -type f -name "$(hostname)-rpms-*.log"
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fi
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echo "Done, please reboot your system."
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