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Update script version and improve argument parsing

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This commit is contained in:
LINUXexpert.org
2026-01-26 11:20:43 -07:00
committed by GitHub
parent 1d43d0ad7d
commit f6b3a1f33f
1 changed files with 89 additions and 130 deletions
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ubuntu-to-mint-convert-v3.sh
+89 -130
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@@ -20,7 +20,7 @@ set -euo pipefail
# =========================
# Version
# =========================
SCRIPT_VERSION="4.6"
SCRIPT_VERSION="4.7"
# =========================
# Globals / Defaults
@@ -32,7 +32,7 @@ LOG_FILE="${LOG_DIR}/ubuntu-to-mint-$(date +%Y%m%d-%H%M%S).log"
exec > >(tee -a "$LOG_FILE") 2>&1
# CLI defaults
CMD="${1:-}"
CMD=""
EDITION="cinnamon"
TARGET_MINT=""
MINT_MIRROR="http://packages.linuxmint.com"
@@ -94,12 +94,18 @@ usage() {
cat <<EOF
ubuntu-to-mint-convert-v3.sh (v${SCRIPT_VERSION})
Usage:
sudo bash $0 doctor
Usage (command-first):
sudo bash $0 doctor [options]
sudo bash $0 plan [options]
sudo bash $0 convert --i-accept-the-risk [options]
sudo bash $0 rollback /root/ubuntu-to-mint-backup-YYYYMMDD-HHMMSS
Usage (options-first ALSO supported in v${SCRIPT_VERSION}):
sudo bash $0 [options] doctor
sudo bash $0 [options] plan
sudo bash $0 [options] convert --i-accept-the-risk
sudo bash $0 rollback /path/to/backup
Options:
--edition cinnamon|mate|xfce (default: cinnamon)
--target <mint_codename> Override Mint codename for your Ubuntu base
@@ -117,37 +123,32 @@ EOF
}
# =========================
# Argument parsing
# APT / dpkg sanity
# =========================
shift_cmd() { shift 1 || true; }
parse_common_args() {
while [[ $# -gt 0 ]]; do
case "$1" in
--edition)
EDITION="${2:-}"; shift 2;;
--target)
TARGET_MINT="${2:-}"; shift 2;;
--mint-mirror)
MINT_MIRROR="${2:-}"; shift 2;;
--keep-ppas)
KEEP_PPAS="yes"; shift 1;;
--preserve-snap)
PRESERVE_SNAP="yes"; shift 1;;
--with-recommends)
WITH_RECOMMENDS="yes"; shift 1;;
--yes)
ASSUME_YES="yes"; shift 1;;
--i-accept-the-risk)
I_ACCEPT_RISK="yes"; shift 1;;
-h|--help)
usage; exit 0;;
*)
die "Unknown argument: $1";;
esac
ensure_no_apt_locks() {
local locks=(/var/lib/dpkg/lock-frontend /var/lib/dpkg/lock /var/lib/apt/lists/lock /var/cache/apt/archives/lock)
for l in "${locks[@]}"; do
if fuser "$l" >/dev/null 2>&1; then
die "APT/dpkg lock is held (lock file: $l). Close package managers and try again."
fi
done
}
apt_fix_broken() {
info "Attempting basic dpkg/apt remediation (best-effort)..."
DEBIAN_FRONTEND=noninteractive dpkg --configure -a || true
DEBIAN_FRONTEND=noninteractive apt-get -y -f install || true
}
apt_opts_common() {
local -a opts
opts=(-y -o Dpkg::Use-Pty=0 -o Acquire::Retries=3)
if [[ "$WITH_RECOMMENDS" != "yes" ]]; then
opts+=(--no-install-recommends)
fi
echo "${opts[@]}"
}
# =========================
# OS Detection
# =========================
@@ -186,7 +187,6 @@ detect_os() {
TARGET_MINT="$DEFAULT_MINT"
fi
# normalize
TARGET_MINT="${TARGET_MINT,,}"
EDITION="${EDITION,,}"
@@ -195,7 +195,6 @@ detect_os() {
*) die "Unsupported --edition '${EDITION}'. Allowed: cinnamon|mate|xfce" ;;
esac
# Allowed target check (no regex footguns)
local found="no"
for t in "${ALLOWED_TARGETS[@]}"; do
if [[ "$t" == "$TARGET_MINT" ]]; then found="yes"; break; fi
@@ -205,33 +204,6 @@ detect_os() {
info "Ubuntu base: ${UBUNTU_BASE} | Target Mint codename: ${TARGET_MINT} | Edition: ${EDITION}"
}
# =========================
# APT / dpkg sanity
# =========================
ensure_no_apt_locks() {
local locks=(/var/lib/dpkg/lock-frontend /var/lib/dpkg/lock /var/lib/apt/lists/lock /var/cache/apt/archives/lock)
for l in "${locks[@]}"; do
if fuser "$l" >/dev/null 2>&1; then
die "APT/dpkg lock is held (lock file: $l). Close package managers and try again."
fi
done
}
apt_fix_broken() {
info "Attempting basic dpkg/apt remediation (best-effort)..."
DEBIAN_FRONTEND=noninteractive dpkg --configure -a || true
DEBIAN_FRONTEND=noninteractive apt-get -y -f install || true
}
apt_opts_common() {
local -a opts
opts=(-y -o Dpkg::Use-Pty=0 -o Acquire::Retries=3)
if [[ "$WITH_RECOMMENDS" != "yes" ]]; then
opts+=(--no-install-recommends)
fi
echo "${opts[@]}"
}
# =========================
# Backup / Restore
# =========================
@@ -296,7 +268,7 @@ timeshift_snapshot_best_effort() {
}
# =========================
# Mint repo key bootstrap (FIXED)
# Mint repo key bootstrap (no keyservers)
# =========================
gpg_key_file_has_keyid() {
local f="$1"
@@ -308,7 +280,6 @@ mint_keyring_build_from_linuxmint_keyring_deb() {
local out_keyring="$1"
[[ -n "$out_keyring" ]] || die "mint_keyring_build_from_linuxmint_keyring_deb: missing output path"
# Ensure tools exist
DEBIAN_FRONTEND=noninteractive apt-get update -y
DEBIAN_FRONTEND=noninteractive apt-get install -y ca-certificates curl gnupg dpkg-dev >/dev/null
@@ -319,8 +290,8 @@ mint_keyring_build_from_linuxmint_keyring_deb() {
local pool_https="https://packages.linuxmint.com/pool/main/l/linuxmint-keyring/"
local pool_http="http://packages.linuxmint.com/pool/main/l/linuxmint-keyring/"
local index=""
info "Bootstrapping Mint keyring from linuxmint-keyring (.deb) pool..."
info "Bootstrapping Mint keyring from linuxmint-keyring (.deb) pool..."
if index="$(curl -fsSL "$pool_https" 2>/dev/null)"; then
:
elif index="$(curl -fsSL "$pool_http" 2>/dev/null)"; then
@@ -330,7 +301,6 @@ mint_keyring_build_from_linuxmint_keyring_deb() {
die "Unable to fetch linuxmint-keyring pool index (blocked network/proxy?)"
fi
# Extract deb filenames
local debs
debs="$(printf '%s' "$index" | grep -oE 'linuxmint-keyring_[0-9][^"]*_all\.deb' | sort -Vu | uniq || true)"
[[ -n "$debs" ]] || { rm -rf "$tmpdir"; die "Could not find linuxmint-keyring_*.deb in pool index." ; }
@@ -351,7 +321,6 @@ mint_keyring_build_from_linuxmint_keyring_deb() {
mkdir -p "${tmpdir}/extract"
dpkg-deb -x "${tmpdir}/${deb}" "${tmpdir}/extract"
# Candidate key files
local -a candidates=()
while IFS= read -r f; do candidates+=("$f"); done < <(find "${tmpdir}/extract" -type f \( -name '*.gpg' -o -name '*.asc' -o -name '*.key' \) 2>/dev/null | sort)
@@ -374,28 +343,20 @@ mint_keyring_build_from_linuxmint_keyring_deb() {
mkdir -p "$(dirname "$out_keyring")"
# Write via temp file to avoid 'File exists' and partial writes
local tmp_out
tmp_out="$(mktemp "${tmpdir}/keyring.XXXXXX")"
rm -f "$tmp_out"
info "Using key candidate: $chosen"
if [[ "$chosen" == *.asc || "$chosen" == *.key ]]; then
# Validate that it's actually a PGP block before dearmor
if ! grep -q "BEGIN PGP PUBLIC KEY BLOCK" "$chosen" 2>/dev/null; then
rm -rf "$tmpdir"
die "Selected key candidate is not an armored PGP public key block: $chosen"
fi
grep -q "BEGIN PGP PUBLIC KEY BLOCK" "$chosen" 2>/dev/null || { rm -rf "$tmpdir"; die "Selected key candidate is not armored PGP: $chosen"; }
gpg --batch --dearmor -o "$tmp_out" "$chosen" || { rm -rf "$tmpdir"; die "gpg dearmor failed for key candidate"; }
else
# Assume binary keyring
cp -a "$chosen" "$tmp_out"
fi
# Validate output contains keyid
gpg_key_file_has_keyid "$tmp_out" "$MINT_KEYID" || { rm -rf "$tmpdir"; die "Built keyring does not contain ${MINT_KEYID} (unexpected)"; }
gpg_key_file_has_keyid "$tmp_out" "$MINT_KEYID" || { rm -rf "$tmpdir"; die "Built keyring does not contain ${MINT_KEYID}"; }
# Overwrite destination safely
rm -f "$out_keyring"
install -m 0644 "$tmp_out" "$out_keyring"
@@ -433,13 +394,12 @@ detect_ubuntu_mirrors() {
UBUNTU_ARCHIVE_MIRROR="http://archive.ubuntu.com/ubuntu"
UBUNTU_SECURITY_MIRROR="http://security.ubuntu.com/ubuntu"
# Respect existing mirrors if set in /etc/apt/sources.list(.d)
# Best-effort parsing
local first_archive=""
first_archive="$(grep -RhoE 'deb (http|https)://[^ ]+/ubuntu' /etc/apt/sources.list /etc/apt/sources.list.d/*.list 2>/dev/null | head -n1 | awk '{print $2}' || true)"
if [[ -n "$first_archive" ]]; then
UBUNTU_ARCHIVE_MIRROR="$first_archive"
fi
local first_security=""
first_security="$(grep -RhoE 'deb (http|https)://security\.ubuntu\.com/ubuntu' /etc/apt/sources.list /etc/apt/sources.list.d/*.list 2>/dev/null | head -n1 | awk '{print $2}' || true)"
if [[ -n "$first_security" ]]; then
@@ -471,7 +431,6 @@ deb ${UBUNTU_ARCHIVE_MIRROR%/} ${UBUNTU_BASE}-backports main restricted universe
deb ${UBUNTU_SECURITY_MIRROR%/} ${UBUNTU_BASE}-security main restricted universe multiverse
EOF
# Disable legacy /etc/apt/sources.list lines (avoid duplicates)
if [[ -f /etc/apt/sources.list ]]; then
sed -i 's/^[[:space:]]*deb /# deb /' /etc/apt/sources.list || true
sed -i 's/^[[:space:]]*deb-src /# deb-src /' /etc/apt/sources.list || true
@@ -484,8 +443,6 @@ write_mint_pinning_system() {
local pref="/etc/apt/preferences.d/50-linuxmint-conversion.pref"
info "Writing APT pinning to ${pref}"
# Key fix: don't cripple Mint repo to priority=100; keep it at Ubuntu parity (500)
# so Mint packages win when they have higher versions (the Mint-like behavior).
cat > "$pref" <<'EOF'
Package: *
Pin: origin "packages.linuxmint.com"
@@ -544,10 +501,8 @@ ensure_lightdm_defaults() {
DEBIAN_FRONTEND=noninteractive apt-get install -y lightdm slick-greeter
# Ensure LightDM is the default display manager
echo "/usr/sbin/lightdm" > /etc/X11/default-display-manager || true
# Disable gdm3 if present to avoid confusion
if systemctl is-enabled gdm3 >/dev/null 2>&1; then
warn "Disabling gdm3 (keeping installed)."
systemctl disable --now gdm3 || true
@@ -557,7 +512,6 @@ ensure_lightdm_defaults() {
fi
fi
# Remove conflicting LightDM user-session settings (best-effort)
mkdir -p /etc/lightdm/lightdm.conf.d
shopt -s nullglob
for f in /etc/lightdm/lightdm.conf.d/*.conf; do
@@ -576,7 +530,6 @@ greeter-session=slick-greeter
user-session=${sess}
EOF
# Update users' ~/.dmrc so LightDM doesn't keep choosing ubuntu sessions
for homedir in /home/*; do
[[ -d "$homedir" ]] || continue
local user
@@ -594,7 +547,6 @@ EOF
continue
fi
# Update existing
if grep -q '^\[Desktop\]' "$dmrc"; then
if grep -q '^Session=' "$dmrc"; then
sed -i "s/^Session=.*/Session=${sess}/" "$dmrc" || true
@@ -701,7 +653,6 @@ plan_mode() {
tmpapt="$(mktemp -d)"
mkdir -p "${tmpapt}/etc/apt/sources.list.d" "${tmpapt}/etc/apt/preferences.d" "${tmpapt}/var/lib/apt/lists/partial" "${tmpapt}/var/cache/apt/archives/partial" "${tmpapt}/usr/share/keyrings"
# Build keyring in temp, no keyservers
local tmp_keyring="${tmpapt}/usr/share/keyrings/linuxmint-repo.gpg"
mint_keyring_build_from_linuxmint_keyring_deb "$tmp_keyring"
@@ -715,7 +666,6 @@ deb ${UBUNTU_ARCHIVE_MIRROR%/} ${UBUNTU_BASE}-backports main restricted universe
deb ${UBUNTU_SECURITY_MIRROR%/} ${UBUNTU_BASE}-security main restricted universe multiverse
EOF
# Pinning (same as system)
cat > "${tmpapt}/etc/apt/preferences.d/50-linuxmint-conversion.pref" <<'EOF'
Package: *
Pin: origin "packages.linuxmint.com"
@@ -743,7 +693,6 @@ EOF
local plan_out="${LOG_DIR}/plan-$(date +%Y%m%d-%H%M%S).txt"
info "Simulating install (plan) -> ${plan_out}"
# Simulation
set +e
apt_tmp_run "$tmpapt" -s install $(apt_opts_common) \
"$meta" mint-meta-core mintsystem mintupdate mintsources mint-meta-codecs \
@@ -788,12 +737,10 @@ doctor() {
# Convert
# =========================
show_disclaimer_and_require_ack() {
# Only required on convert
if [[ "$I_ACCEPT_RISK" != "yes" ]]; then
die "convert requires --i-accept-the-risk"
fi
# If no TTY, require --yes as explicit non-interactive confirmation
if ! is_tty; then
if [[ "$ASSUME_YES" == "yes" ]]; then
warn "Non-interactive session detected; proceeding due to --yes and --i-accept-the-risk."
@@ -802,7 +749,6 @@ show_disclaimer_and_require_ack() {
die "convert in non-interactive mode requires --yes (in addition to --i-accept-the-risk)"
fi
# Interactive warning unless --yes
if [[ "$ASSUME_YES" == "yes" ]]; then
warn "Skipping interactive disclaimer prompt due to --yes."
return 0
@@ -832,18 +778,13 @@ convert() {
disable_thirdparty_sources_system "$backup_dir"
timeshift_snapshot_best_effort
# Install keyring (FIXED)
mint_repo_key_install_system
# Write sources + pinning
write_mint_sources_system
write_mint_pinning_system
# Update apt
info "APT update..."
DEBIAN_FRONTEND=noninteractive apt-get $(apt_opts_common) update
# Prepare package list
local meta=""
case "$EDITION" in
cinnamon) meta="mint-meta-cinnamon" ;;
@@ -851,33 +792,26 @@ convert() {
xfce) meta="mint-meta-xfce" ;;
esac
# Conflict mitigation before mintupdate install
apply_mintupdate_icon_diversion
# Install base Mint tooling + chosen DE
info "Installing Mint meta packages and tooling..."
DEBIAN_FRONTEND=noninteractive apt-get $(apt_opts_common) install \
"$meta" mint-meta-core mintsystem mintupdate mintsources mint-meta-codecs
# Keep snap if requested
if [[ "$PRESERVE_SNAP" == "yes" ]]; then
info "Preserving snap support (best-effort)..."
DEBIAN_FRONTEND=noninteractive apt-get $(apt_opts_common) install snapd || true
fi
# Post-install: ensure critical X11 bits (fixes has_option errors)
info "Reinstalling x11-common (fixes Xsession has_option issues)..."
DEBIAN_FRONTEND=noninteractive apt-get $(apt_opts_common) install --reinstall x11-common || true
# Ensure gnome-rr runtime libs exist (helps csd-* symbol issues on Noble)
info "Ensuring GNOME RandR runtime libs present (best-effort)..."
DEBIAN_FRONTEND=noninteractive apt-get $(apt_opts_common) install \
libgnome-rr-4-2t64 libgnome-desktop-4-2t64 libgnome-bg-4-2t64 || true
# Configure LightDM + defaults for chosen edition
ensure_lightdm_defaults
# Write validation file into backup dir (always)
mkdir -p "$backup_dir"
post_install_sanity "${backup_dir}/post-convert-validation.txt" || true
@@ -889,43 +823,68 @@ convert() {
echo " 3) Validate VPN/EDR/MDM tooling and compliance"
}
# =========================
# NEW: Parse args in any order
# =========================
parse_args_any_order() {
# Allows: script [options] <command> [options] [rollback_dir]
while [[ $# -gt 0 ]]; do
case "$1" in
doctor|plan|convert|rollback)
if [[ -n "$CMD" ]]; then
die "Multiple commands specified: '${CMD}' and '$1'"
fi
CMD="$1"
shift 1
if [[ "$CMD" == "rollback" ]]; then
# First non-option token after rollback is the dir
if [[ $# -gt 0 && "${1:-}" != --* ]]; then
ROLLBACK_DIR="$1"
shift 1
fi
fi
;;
--edition)
EDITION="${2:-}"; shift 2;;
--target)
TARGET_MINT="${2:-}"; shift 2;;
--mint-mirror)
MINT_MIRROR="${2:-}"; shift 2;;
--keep-ppas)
KEEP_PPAS="yes"; shift 1;;
--preserve-snap)
PRESERVE_SNAP="yes"; shift 1;;
--with-recommends)
WITH_RECOMMENDS="yes"; shift 1;;
--yes)
ASSUME_YES="yes"; shift 1;;
--i-accept-the-risk)
I_ACCEPT_RISK="yes"; shift 1;;
-h|--help|help)
usage; exit 0;;
*)
die "Unknown argument: $1"
;;
esac
done
}
# =========================
# Main
# =========================
main() {
if [[ -z "$CMD" ]]; then
usage
exit 1
fi
parse_args_any_order "$@"
[[ -n "$CMD" ]] || { usage; exit 1; }
case "$CMD" in
doctor)
shift_cmd
parse_common_args "$@"
doctor
;;
plan)
shift_cmd
parse_common_args "$@"
plan_mode
;;
convert)
shift_cmd
parse_common_args "$@"
convert
;;
doctor) doctor ;;
plan) plan_mode ;;
convert) convert ;;
rollback)
shift_cmd
ROLLBACK_DIR="${1:-}"
[[ -n "$ROLLBACK_DIR" ]] || die "rollback requires a directory argument"
rollback "$ROLLBACK_DIR"
;;
-h|--help|help)
usage
;;
*)
die "Unknown command: $CMD"
;;
*) die "Unknown command: $CMD" ;;
esac
}