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Make shell command substitutions safe with || true (#13279)

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Add defensive fallbacks (|| true) to multiple command substitutions to prevent non-zero exits when commands produce no output or are unavailable. Changes touch misc/api.func, misc/build.func and misc/tools.func and cover places like lspci, /proc/cpuinfo parsing, /etc/os-release reads, hostname -I usage, grep reads from vars files and maps, pct config parsing, storage/template lookups, tool version detection, NVIDIA driver version extraction, and MeiliSearch config parsing. These edits do not change functional behavior aside from ensuring the scripts continue running (variables will be empty) instead of failing in stricter shells or when commands return non-zero status.
This commit is contained in:
CanbiZ (MickLesk)
2026-03-25 13:06:21 +01:00
committed by GitHub
parent de356fa8b6
commit 53bc492fdb
3 changed files with 22 additions and 22 deletions
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misc/build.func
+10 -10
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@@ -173,10 +173,10 @@ get_current_ip() {
# Check for Debian/Ubuntu (uses hostname -I)
if grep -qE 'ID=debian|ID=ubuntu' /etc/os-release; then
# Try IPv4 first
CURRENT_IP=$(hostname -I 2>/dev/null | tr ' ' '\n' | grep -E '^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$' | head -n1)
CURRENT_IP=$(hostname -I 2>/dev/null | tr ' ' '\n' | grep -E '^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$' | head -n1 || true)
# Fallback to IPv6 if no IPv4
if [[ -z "$CURRENT_IP" ]]; then
CURRENT_IP=$(hostname -I 2>/dev/null | tr ' ' '\n' | grep -E ':' | head -n1)
CURRENT_IP=$(hostname -I 2>/dev/null | tr ' ' '\n' | grep -E ':' | head -n1 || true)
fi
# Check for Alpine (uses ip command)
elif grep -q 'ID=alpine' /etc/os-release; then
@@ -1704,8 +1704,8 @@ ensure_storage_selection_for_vars_file() {
# Read stored values (if any)
local tpl ct
tpl=$(grep -E '^var_template_storage=' "$vf" | cut -d= -f2-)
ct=$(grep -E '^var_container_storage=' "$vf" | cut -d= -f2-)
tpl=$(grep -E '^var_template_storage=' "$vf" | cut -d= -f2- || true)
ct=$(grep -E '^var_container_storage=' "$vf" | cut -d= -f2- || true)
if [[ -n "$tpl" && -n "$ct" ]]; then
TEMPLATE_STORAGE="$tpl"
@@ -1840,7 +1840,7 @@ advanced_settings() {
if [[ -n "$BRIDGES" ]]; then
while IFS= read -r bridge; do
if [[ -n "$bridge" ]]; then
local description=$(grep -A 10 "iface $bridge" /etc/network/interfaces 2>/dev/null | grep '^#' | head -n1 | sed 's/^#\s*//;s/^[- ]*//')
local description=$(grep -A 10 "iface $bridge" /etc/network/interfaces 2>/dev/null | grep '^#' | head -n1 | sed 's/^#\s*//;s/^[- ]*//' || true)
BRIDGE_MENU_OPTIONS+=("$bridge" "${description:- }")
fi
done <<<"$BRIDGES"
@@ -3322,7 +3322,7 @@ configure_ssh_settings() {
tag="${tag%\"}"
tag="${tag#\"}"
local line
line=$(grep -E "^${tag}\|" "$MAPFILE" | head -n1 | cut -d'|' -f2-)
line=$(grep -E "^${tag}\|" "$MAPFILE" | head -n1 | cut -d'|' -f2- || true)
[[ -n "$line" ]] && printf '%s\n' "$line" >>"$SSH_KEYS_FILE"
done
;;
@@ -3349,7 +3349,7 @@ configure_ssh_settings() {
tag="${tag%\"}"
tag="${tag#\"}"
local line
line=$(grep -E "^${tag}\|" "$MAPFILE" | head -n1 | cut -d'|' -f2-)
line=$(grep -E "^${tag}\|" "$MAPFILE" | head -n1 | cut -d'|' -f2- || true)
[[ -n "$line" ]] && printf '%s\n' "$line" >>"$SSH_KEYS_FILE"
done
else
@@ -4050,7 +4050,7 @@ EOF
# Fix Debian 13 LXC template bug where / is owned by nobody:nogroup
# This must be done from the host as unprivileged containers cannot chown /
local rootfs
rootfs=$(pct config "$CTID" | grep -E '^rootfs:' | sed 's/rootfs: //' | cut -d',' -f1)
rootfs=$(pct config "$CTID" | grep -E '^rootfs:' | sed 's/rootfs: //' | cut -d',' -f1 || true)
if [[ -n "$rootfs" ]]; then
local mount_point="/var/lib/lxc/${CTID}/rootfs"
if [[ -d "$mount_point" ]] && [[ "$(stat -c '%U' "$mount_point")" != "root" ]]; then
@@ -5142,7 +5142,7 @@ create_lxc_container() {
fi
msg_info "Validating storage '$CONTAINER_STORAGE'"
STORAGE_TYPE=$(grep -E "^[^:]+: $CONTAINER_STORAGE$" /etc/pve/storage.cfg | cut -d: -f1 | head -1)
STORAGE_TYPE=$(grep -E "^[^:]+: $CONTAINER_STORAGE$" /etc/pve/storage.cfg | cut -d: -f1 | head -1 || true)
if [[ -z "$STORAGE_TYPE" ]]; then
msg_error "Storage '$CONTAINER_STORAGE' not found in /etc/pve/storage.cfg"
@@ -5181,7 +5181,7 @@ create_lxc_container() {
msg_ok "Storage '$CONTAINER_STORAGE' ($STORAGE_TYPE) validated"
msg_info "Validating template storage '$TEMPLATE_STORAGE'"
TEMPLATE_TYPE=$(grep -E "^[^:]+: $TEMPLATE_STORAGE$" /etc/pve/storage.cfg | cut -d: -f1)
TEMPLATE_TYPE=$(grep -E "^[^:]+: $TEMPLATE_STORAGE$" /etc/pve/storage.cfg | cut -d: -f1 || true)
if ! pvesm status -content vztmpl 2>/dev/null | awk 'NR>1{print $1}' | grep -qx "$TEMPLATE_STORAGE"; then
msg_warn "Template storage '$TEMPLATE_STORAGE' may not support 'vztmpl'"