mirror of
https://github.com/rocky-linux/rocky-tools.git
synced 2024-11-24 22:21:24 +00:00
Louis Abel
GitHub
commit
c83b38f784
532
migrate2rocky.sh
Normal file
532
migrate2rocky.sh
Normal file
@ -0,0 +1,532 @@
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#!/bin/bash
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#
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# migrate2rocky - Migrate another EL8 distribution to RockyLinux 8.
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# By: Peter Ajamian <peter@pajamian.dhs.org>
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# Adapted from centos2rocky.sh by label <label@rockylinux.org>
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#
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## Rocky is RC status. Using this script means you accept all risks of system
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## instability.
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# Path to logfile
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logfile=/var/log/centos2rocky.log
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# Send all output to the logfile as well as stdout.
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truncate -s0 "$logfile"
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exec > >(tee -a "$logfile") 2> >(tee -a "$logfile" >&2)
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# List nocolor last here so that -x doesn't bork the display.
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errcolor=$(tput setaf 1)
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blue=$(tput setaf 4)
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nocolor=$(tput op)
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export LANG=en_US.UTF-8
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shopt -s nullglob
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SUPPORTED_MAJOR="8"
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SUPPORTED_PLATFORM="platform:el$SUPPORTED_MAJOR"
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ARCH=$(arch)
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repo_urls=(
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"rockybaseos,https://dl.rockylinux.org/pub/rocky/${SUPPORTED_MAJOR}/BaseOS/$ARCH/os/"
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"rockyappstream,https://dl.rockylinux.org/pub/rocky/${SUPPORTED_MAJOR}/AppStream/$ARCH/os/"
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)
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unset CDPATH
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exit_message() {
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printf '%s\n' "$1"
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final_message
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exit 1
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} >&2
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final_message() {
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printf '%s\n' "${errcolor}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.$nocolor"
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logmessage
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}
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logmessage(){
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printf '%s\n' "${blue}A log of this installation can be found at $logfile$nocolor"
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}
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# This just grabs a field from os-release and returns it.
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os-release () (
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. /etc/os-release
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if ! [[ ${!1} ]]; then
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return 1
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fi
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printf '%s\n' "${!1}"
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)
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# All of the binaries used by this script are available in a EL8 minimal install
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# and are in /bin, so we should not encounter a system where the script doesn't
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# work unless it's severly broken. This is just a simple check that will cause
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# the script to bail if any expected system utilities are missing.
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bin_check() {
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# Make sure we're root.
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if (( EUID != 0 )); then
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exit_message "You must run this script as root. Either use sudo or 'su -c ${0}'"
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fi
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# Check the platform.
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if [[ $(os-release PLATFORM_ID) != $SUPPORTED_PLATFORM ]]; then
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exit_message "This script must be run on an EL8 distribution. Migration from other distributions is not supported."
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fi
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# We need bash version >= 4 for associative arrays. This will also verify
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# that we're actually running bash.
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if (( BASH_VERSINFO < 4 )); then
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exit_message "bash >= 4.0 is required for this script."
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fi
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local -a missing
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for bin in rpm dnf awk column tee tput mkdir cat arch sort uniq rmdir rm; do
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if ! type "$bin" >/dev/null 2>&1; then
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missing+=("$bin")
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fi
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done
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if (( ${#missing[@]} )); then
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exit_message "Commands not found: ${missing[@]}. Possible bad PATH setting or corrupt installation."
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fi
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}
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# This function will overwrite the repoquery_results associative array with the
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# info for the resulting package. Note that we explicitly disable the epel repo
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# as a special-case below to avoid having the extras repository map to epel.
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repoquery () {
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local name val prev result=$(
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dnf -q --setopt=epel.excludepkgs=epel-release repoquery -i "$1" ||
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exit_message "Failed to fetch info for package $1."
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)
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if ! [[ $result ]]; then
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# We didn't match this package, the repo could be disabled.
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return 1
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fi
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declare -gA repoquery_results=()
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while IFS=" :" read -r name val; do
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if [[ -z $name ]]; then
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repoquery_results[$prev]+=" $val"
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else
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prev=$name
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repoquery_results[$name]=$val
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fi
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done <<<"$result"
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}
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# This function will overwrite the repoinfo_results associative array with the
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# info for the resulting repository.
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repoinfo () {
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local name val result
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result=$(dnf -q repoinfo "$1") ||
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exit_message "Failed to fetch info for repository $1."
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if [[ $result == 'Total packages: 0' ]]; then
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# We didn't match this repo.
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return 1
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fi
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declare -gA repoinfo_results=()
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while IFS=" :" read -r name val; do
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if [[ -z $name ]]; then
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repoinfo_results[$prev]+=" $val"
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else
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prev=$name
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repoinfo_results[$name]=$val
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fi
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done <<<"$result"
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# dnf repoinfo doesn't return the gpgkey, but we need that so we have to get
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# it from the repo file itself.
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# "end_of_file" is a hack here. Since it is not a valid dnf setting we know
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# it won't appear in a .repo file on a line by itself, so it's safe to
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# search for the string to make the awk parser look all the way to the end
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# of the file.
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repoinfo_results[Repo-gpgkey]=$(
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awk '
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$0=="['"${repoinfo_results[Repo-id]}"']",$0=="end_of_file" {
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if (l++ < 1) {next}
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else if (/^\[.*\]$/) {nextfile}
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else if (sub(/^gpgkey\s*=\s*file:\/\//,"")) {print; nextfile}
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else {next}
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}
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' < "${repoinfo_results[Repo-filename]}"
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)
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# Add an indicator of whether this is a subscription-manager managed
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# repository.
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repoinfo_results[Repo-managed]=$(
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awk '
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BEGIN {FS="[)(]"}
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/^# Managed by \(.*\) subscription-manager$/ {print $2}
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' < "${repoinfo_results[Repo-filename]}"
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)
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}
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provides_pkg () (
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if [[ ! $1 ]]; then
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return 0
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fi
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set -o pipefail
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provides=$(dnf -q provides "$1" | awk '{print $1; nextfile}') ||
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return 1
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set +o pipefail
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pkg=$(dnf -q repoquery --queryformat '%{NAME}' "$provides") ||
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exit_message "Can't get package name for $provides."
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printf '%s\n' "$pkg"
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)
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collect_system_info () {
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# Don't enable these module streams, even if they are enabled in the source
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# distro.
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declare -g -a module_excludes
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module_excludes=(
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libselinux-python:2.8
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)
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# We need to map rockylinux repository names to the equivalent repositories
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# in the source distro. To do that we look for known packages in each
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# repository and see what repo they came from. We need to use repoquery for
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# this which requires downloading the package, so we pick relatively small
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# packages for this.
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declare -g -A repo_map pkg_repo_map
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declare -g -a managed_repos
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pkg_repo_map=(
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[baseos]=rootfiles.noarch
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[appstream]=apr-util-ldap.$ARCH
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[ha]=pacemaker-doc.noarch
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[powertools]=libaec-devel.$ARCH
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[extras]=epel-release.noarch
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)
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# [devel]=quota-devel.$ARCH
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PRETTY_NAME=$(os-release PRETTY_NAME)
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printf '%s\n' "${blue}Preparing to migrate $PRETTY_NAME to Rocky Linux 8.$nocolor"
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printf '\n%s' "${blue}Determining repository names for $PRETTY_NAME$nocolor"
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for r in "${!pkg_repo_map[@]}"; do
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printf '.'
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p=${pkg_repo_map[$r]}
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repoquery "$p" || continue
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repo_map[$r]=${repoquery_results[Repository]}
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done
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printf '%s\n' '' '' "Found the following repositories which map from $PRETTY_NAME to Rocky Linux 8:"
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column -t -N "$PRETTY_NAME,Rocky Linux 8" < <(for r in "${!repo_map[@]}"; do
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printf '%s %s\n' "${repo_map[$r]}" "$r"
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done)
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printf '\n%s' "${blue}Getting system package names for $PRETTY_NAME$nocolor."
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# We don't know what the names of these packages are, we have to discover
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# them via various means. The most common means is to look for either a
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# distro-agnostic provides or a filename. In a couple of cases we need to
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# jump through hoops to get a filename that is provided specifically by the
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# source distro.
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# Get info for each repository to determine which ones are subscription
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# managed.
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# system-release here is a bit of a hack, but it ensures that the
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# rocky-repos package will get installed.
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for r in "${!repo_map[@]}"; do
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repoinfo "${repo_map[$r]}"
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if [[ $r == "baseos" ]]; then
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local baseos_filename=system-release
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if [[ ! ${repoinfo_results[Repo-managed]} ]]; then
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baseos_filename="${repoinfo_results[Repo-filename]}"
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fi
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local baseos_gpgkey="${repoinfo_results[Repo-gpgkey]}"
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fi
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if [[ ${repoinfo_results[Repo-managed]} ]]; then
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managed_repos+=("${repo_map[$r]}")
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fi
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done
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# First get info for the baseos repo
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repoinfo "${repo_map[baseos]}"
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declare -g -A pkg_map provides_pkg_map
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declare -g -a addl_provide_removes addl_pkg_removes
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provides_pkg_map=(
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[rocky-backgrounds]=system-backgrounds
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[rocky-indexhtml]=redhat-indexhtml
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[rocky-repos]="$baseos_filename"
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[rocky-logos]=system-logos
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[rocky-gpg-keys]="$baseos_gpgkey"
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[rocky-release]=system-release
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)
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addl_provide_removes=(
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redhat-release-eula
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)
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for pkg in "${!provides_pkg_map[@]}"; do
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printf '.'
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prov=${provides_pkg_map[$pkg]}
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pkg_map[$pkg]=$(provides_pkg $prov) ||
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exit_message "Can't get package that provides $prov."
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done
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for prov in "${addl_provide_removes[@]}"; do
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printf '.'
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local pkg;
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pkg=$(provides_pkg $prov) || continue
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addl_pkg_removes+=("$pkg")
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done
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printf '%s\n' '' '' "Found the following system packages which map from $PRETTY_NAME to Rocky Linux 8:"
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column -t -N "$PRETTY_NAME,Rocky Linux 8" < <(for p in "${!pkg_map[@]}"; do
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printf '%s %s\n' "${pkg_map[$p]}" "$p"
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done)
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printf '%s\n' '' "${blue}Getting list of installed system packages$nocolor."
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readarray -t installed_packages < <(rpm -qa --queryformat="%{NAME}\n" "${pkg_map[@]}")
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declare -g -A installed_pkg_check installed_pkg_map
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for p in "${installed_packages[@]}"; do
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installed_pkg_check[$p]=1
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done
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for p in "${!pkg_map[@]}"; do
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if [[ ${installed_pkg_check[${pkg_map[$p]}]} ]]; then
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installed_pkg_map[$p]=${pkg_map[$p]}
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fi
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done;
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printf '%s\n' '' "We will replace the following $PRETTY_NAME packages with their Rocky Linux 8 equivalents"
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column -t -N "Packages to be Removed,Packages to be Installed" < <(
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for p in "${!installed_pkg_map[@]}"; do
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printf '%s %s\n' "${installed_pkg_map[$p]}" "$p"
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done
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)
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if (( ${#addl_pkg_removes[@]} )); then
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printf '%s\n' '' "In addition to the above the following system packages will be removed:" \
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"${addl_pkg_removes[@]}"
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fi
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# Release packages that are part of SIG's should be listed below when they
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# are available.
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# UPDATE: We may or may not do something with SIG's here, it could just be
|
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# left as a separate excersize to swap out the sig repos.
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#sigs_to_swap=()
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printf '%s\n' '' "${blue}Getting a list of enabled modules for the system repositories$nocolor."
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|
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# Get a list of system enabled modules.
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readarray -t enabled_modules < <(
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set -e -o pipefail
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dnf -q "${repo_map[@]/#/--repo=}" module list --enabled |
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awk '
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$1 == "@modulefailsafe", /^$/ {next}
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||||
$1 == "Name", /^$/ {if ($1!="Name" && !/^$/) print $1":"$2}
|
||||
' | sort -u
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set +e +o pipefail
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)
|
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# Remove entries matching any excluded modules.
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if (( ${#module_excludes[@]} )); then
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printf '%s\n' '' "Excluding modules:" "${module_excludes[@]}"
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local -A module_check='()'
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local -a tmparr='()'
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for m in "${module_excludes[@]}"; do
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module_check[$m]=1
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done
|
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for m in "${enabled_modules[@]}"; do
|
||||
if [[ ! ${module_check[$m]} ]]; then
|
||||
tmparr+=("$m")
|
||||
fi
|
||||
done
|
||||
enabled_modules=("${tmparr[@]}")
|
||||
fi
|
||||
|
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printf '%s\n' '' "Found the following modules to re-enable at completion:" \
|
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"${enabled_modules[@]}" ''
|
||||
|
||||
if (( ${#managed_repos[@]} )); then
|
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printf '%s\n' '' "In addition, since this system uses subscription-manger the following managed repos will be disabled:" \
|
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"${managed_repos[@]}"
|
||||
fi
|
||||
}
|
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|
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convert_info_dir=/root/convert
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unset convert_to_rocky reinstall_all_rpms verify_all_rpms
|
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|
||||
usage() {
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||||
printf '%s\n' \
|
||||
"Usage: ${0##*/} [OPTIONS]" \
|
||||
'' \
|
||||
'Options:' \
|
||||
'-h displays this help' \
|
||||
'-r Converts to rocky' \
|
||||
'-V Verifies switch' \
|
||||
' !! USE WITH CAUTION !!'
|
||||
exit 1
|
||||
} >&2
|
||||
|
||||
generate_rpm_info() {
|
||||
mkdir /root/convert
|
||||
printf '%s\n' "${blue}Creating a list of RPMs installed: $1$nocolor"
|
||||
rpm -qa --qf "%{NAME}|%{VERSION}|%{RELEASE}|%{INSTALLTIME}|%{VENDOR}|%{BUILDTIME}|%{BUILDHOST}|%{SOURCERPM}|%{LICENSE}|%{PACKAGER}\n" | sort > "${convert_info_dir}/$HOSTNAME-rpm-list-$1.log"
|
||||
printf '%s\n' "${blue}Verifying RPMs installed against RPM database: $1$nocolor" ''
|
||||
rpm -Va | sort -k3 > "${convert_info_dir}/$HOSTNAME-rpm-list-verified-$1.log"
|
||||
}
|
||||
|
||||
package_swaps() {
|
||||
# Use dnf shell to swap the system packages out.
|
||||
dnf -y shell --nogpg --disablerepo=\* --noautoremove \
|
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--setopt=protected_packages= --setopt=keepcache=True \
|
||||
"${repo_urls[@]/#/--repofrompath=}" <<EOF
|
||||
remove ${installed_pkg_map[@]} ${addl_pkg_removes[@]}
|
||||
install ${!installed_pkg_map[@]}
|
||||
run
|
||||
exit
|
||||
EOF
|
||||
|
||||
# We need to check to make sure that all of the original system packages
|
||||
# have been removed and all of the new ones have been added. If a package
|
||||
# was supposed to be removed and one with the same name added back then
|
||||
# we're kind of screwed for this check, as we can't be certain, but all the
|
||||
# packages we're adding start with "rocky-*" so this really shouldn't happen
|
||||
# and we can safely not check for it. The worst that will happen is a rocky
|
||||
# linux package will be removed and then installed again.
|
||||
local -a check_removed check_installed
|
||||
readarray -t check_removed < <(
|
||||
rpm -qa --qf '%{NAME}\n' "${installed_pkg_map[@]}" \
|
||||
"${addl_pkg_removes[@]}" | sort -u
|
||||
)
|
||||
|
||||
if (( ${#check_removed[@]} )); then
|
||||
printf '%s\n' '' "${blue}Packages found on system that should still be removed. Forcibly removing them with rpm:$nocolor"
|
||||
# Removed packages still found on the system. Forcibly remove them.
|
||||
for pkg in "${check_removed[@]}"; do
|
||||
printf '%s\n' "$pkg"
|
||||
rpm -e --allmatches --nodeps "${check_removed[@]}" ||
|
||||
rpm -e --allmatches --nodeps --noscripts --notriggers "$pkg"
|
||||
done
|
||||
fi
|
||||
|
||||
# Check to make sure we installed everything we were supposed to.
|
||||
readarray -t check_installed < <(
|
||||
{
|
||||
printf '%s\n' "${!installed_pkg_map[@]}" | sort -u
|
||||
rpm -qa --qf '%{NAME}\n' "${!installed_pkg_map[@]}" | sort -u
|
||||
} | sort | uniq -u
|
||||
)
|
||||
if (( ${#check_installed[@]} )); then
|
||||
printf '%s\n' '' "${blue}Some required packages were not installed by dnf. Attempting to force with rpm:$nocolor"
|
||||
|
||||
# Get a list of rpm packages to package names
|
||||
local -A rpm_map
|
||||
local -a file_list
|
||||
for rpm in /var/cache/dnf/{rockybaseos,rockyappstream}-*/packages/*.rpm
|
||||
do
|
||||
rpm_map[$(
|
||||
rpm -q --qf '%{NAME}\n' --nodigest "$rpm" 2>/dev/null
|
||||
)]=$rpm
|
||||
done
|
||||
|
||||
# Attempt to install.
|
||||
for pkg in "${check_installed[@]}"; do
|
||||
printf '%s\n' "$pkg"
|
||||
if ! rpm -i --force --nodeps --nodigest "${rpm_map[$pkg]}" \
|
||||
2>/dev/null; then
|
||||
# Try to install the package in just the db, then clean it up.
|
||||
rpm -i --force --justdb --nodeps --nodigest "${rpm_map[$pkg]}" \
|
||||
2>/dev/null
|
||||
|
||||
# Get list of files that are still causing problems and donk
|
||||
# them.
|
||||
readarray -t file_list < <(
|
||||
rpm -V "$pkg" 2>/dev/null | awk '$1!="missing" {print $2}'
|
||||
)
|
||||
for file in "${file_list[@]}"; do
|
||||
rmdir "$file" ||
|
||||
rm -f "$file" ||
|
||||
rm -rf "$file"
|
||||
done
|
||||
|
||||
# Now try re-installing the package to replace the missing
|
||||
# files. Regardless of the outcome here we just accept it and
|
||||
# move on and hope for the best.
|
||||
rpm -i --reinstall --force --nodeps --nodigest \
|
||||
"${rpm_map[$pkg]}" 2>/dev/null
|
||||
fi
|
||||
done
|
||||
fi
|
||||
|
||||
# Distrosync
|
||||
printf '%s\n' '' "${blue}Removing dnf cache$nocolor"
|
||||
rm -rf /var/cache/{yum,dnf}
|
||||
printf '%s\n' "${blue}Ensuring repos are enabled before the package swap$nocolor"
|
||||
dnf -y config-manager --set-enabled "${!repo_map[@]}" || {
|
||||
printf '%s\n' 'Repo name missing?'
|
||||
exit 25
|
||||
}
|
||||
|
||||
if (( ${#managed_repos[@]} )); then
|
||||
# Filter the managed repos for ones still in the system.
|
||||
readarray -t managed_repos < <(
|
||||
dnf -q repolist "${managed_repos[@]}" | awk '$1!="repo" {print $1}'
|
||||
)
|
||||
|
||||
if (( ${#managed_repos[@]} )); then
|
||||
printf '%s\n' '' "${blue}Disabling subscription managed repos$nocolor."
|
||||
dnf -y config-manager --disable "${managed_repos[@]}"
|
||||
fi
|
||||
fi
|
||||
|
||||
if (( ${#enabled_modules[@]} )); then
|
||||
printf '%s\n' "${blue}Enabling modules$nocolor" ''
|
||||
dnf -y module enable "${enabled_modules[@]}" ||
|
||||
exit_message "Can't enable modules ${enabled_modules[@]}"
|
||||
fi
|
||||
|
||||
# Make sure that excluded repos are disabled.
|
||||
printf '%s\n' "${blue}Disabling excluded modules$nocolor" ''
|
||||
dnf -y module disable "${module_excludes[@]}" ||
|
||||
exit_message "Can't disable modules ${module_excludes[@]}"
|
||||
|
||||
printf '%s\n' '' "${blue}Syncing packages$nocolor" ''
|
||||
dnf -y distro-sync || exit_message "Error during distro-sync."
|
||||
}
|
||||
|
||||
## End actual work
|
||||
|
||||
noopts=0
|
||||
while getopts "hrVR" option; do
|
||||
(( noopts++ ))
|
||||
case "$option" in
|
||||
h)
|
||||
usage
|
||||
;;
|
||||
r)
|
||||
convert_to_rocky=true
|
||||
;;
|
||||
V)
|
||||
verify_all_rpms=true
|
||||
;;
|
||||
*)
|
||||
printf '%s\n' "${errcolor}Invalid switch.$nocolor"
|
||||
usage
|
||||
;;
|
||||
esac
|
||||
done
|
||||
if (( ! noopts )); then
|
||||
usage
|
||||
fi
|
||||
|
||||
bin_check
|
||||
|
||||
if [[ $verify_all_rpms ]]; then
|
||||
generate_rpm_info begin
|
||||
fi
|
||||
|
||||
if [[ $convert_to_rocky ]]; then
|
||||
collect_system_info
|
||||
package_swaps
|
||||
fi
|
||||
|
||||
if [[ $verify_all_rpms && $convert_to_rocky ]]; then
|
||||
generate_rpm_info finish
|
||||
printf '%s\n' "${blue}You may review the following files:$nocolor"
|
||||
find /root/convert -type f -name "$HOSTNAME-rpms-*.log"
|
||||
fi
|
||||
|
||||
printf '\n\n\n'
|
||||
if [[ $convert_to_rocky ]]; then
|
||||
cat /etc/issue | awk 'NR<=15'
|
||||
printf '%s\n' "$blue" "Done, please reboot your system.$nocolor"
|
||||
fi
|
||||
logmessage
|
||||
Loading…
Reference in New Issue
Block a user