fix: make LXC banner OS detection dynamic via /etc/os-release (#14269)

* fix: derive LXC banner OS from os-release

Read os-release at login time for the generated LXC banner so OS display stays accurate after template changes or in-place upgrades. Prefer PRETTY_NAME with safe fallbacks to NAME, template defaults, and Unknown OS while preserving existing banner formatting.

Co-authored-by: Cursor <cursoragent@cursor.com>

* refactor: simplify dynamic LXC banner OS resolution

Reduce banner OS rendering to a minimal runtime os-release read with PRETTY_NAME/NAME fallbacks and Unknown OS default. Remove redundant OS rewrites from update_motd_ip now that OS display is resolved dynamically at login.

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Atahan Kucuk
2026-05-22 08:46:18 +03:00
committed by GitHub
parent 0e00444cb9
commit bc43c262a8
3 changed files with 18 additions and 8 deletions

View File

@@ -182,11 +182,19 @@ motd_ssh() {
echo "export TERM='xterm-256color'" >>/root/.bashrc
PROFILE_FILE="/etc/profile.d/00_lxc-details.sh"
echo "echo -e \"\"" >"$PROFILE_FILE"
echo -e "echo -e \"${BOLD}${APPLICATION} LXC Container${CL}"\" >>"$PROFILE_FILE"
echo -e "echo -e \"${TAB}${GATEWAY}${YW} Provided by: ${GN}community-scripts ORG ${YW}| GitHub: ${GN}https://github.com/community-scripts/ProxmoxVE${CL}\"" >>"$PROFILE_FILE"
echo "echo \"\"" >>"$PROFILE_FILE"
echo -e "echo -e \"${TAB}${OS}${YW} OS: ${GN}\$(grep ^NAME /etc/os-release | cut -d= -f2 | tr -d '\"') - Version: \$(grep ^VERSION_ID /etc/os-release | cut -d= -f2 | tr -d '\"')${CL}\"" >>"$PROFILE_FILE"
cat <<EOF >>"$PROFILE_FILE"
os_display="Unknown OS"
if [ -r /etc/os-release ]; then
. /etc/os-release
os_display="\${PRETTY_NAME:-\${NAME:-Unknown OS}}"
fi
echo -e "${TAB}${OS}${YW} OS: ${GN}\${os_display}${CL}"
EOF
echo -e "echo -e \"${TAB}${HOSTNAME}${YW} Hostname: ${GN}\$(hostname)${CL}\"" >>"$PROFILE_FILE"
echo -e "echo -e \"${TAB}${INFO}${YW} IP Address: ${GN}\$(ip -4 addr show eth0 | awk '/inet / {print \$2}' | cut -d/ -f1 | head -n 1)${CL}\"" >>"$PROFILE_FILE"

View File

@@ -217,22 +217,16 @@ update_motd_ip() {
# Only update if file exists and is from community-scripts
if [ -f "$PROFILE_FILE" ] && grep -q "community-scripts" "$PROFILE_FILE" 2>/dev/null; then
# Get current values
local current_os="$(grep ^NAME /etc/os-release | cut -d= -f2 | tr -d '"') - Version: $(grep ^VERSION_ID /etc/os-release | cut -d= -f2 | tr -d '"')"
local current_hostname="$(hostname)"
local current_ip="$(hostname -I | awk '{print $1}')"
# Escape sed special chars in replacement strings (& \ |)
current_os="${current_os//\\/\\\\}"
current_os="${current_os//&/\\&}"
current_hostname="${current_hostname//\\/\\\\}"
current_hostname="${current_hostname//&/\\&}"
current_ip="${current_ip//\\/\\\\}"
current_ip="${current_ip//&/\\&}"
# Update only if values actually changed
if ! grep -q "OS:.*$current_os" "$PROFILE_FILE" 2>/dev/null; then
sed -i "s|OS:.*|OS: \${GN}$current_os\${CL}\\\"|" "$PROFILE_FILE"
fi
if ! grep -q "Hostname:.*$current_hostname" "$PROFILE_FILE" 2>/dev/null; then
sed -i "s|Hostname:.*|Hostname: \${GN}$current_hostname\${CL}\\\"|" "$PROFILE_FILE"
fi

View File

@@ -455,11 +455,19 @@ motd_ssh() {
grep -qxF "export TERM='xterm-256color'" /root/.bashrc || echo "export TERM='xterm-256color'" >>/root/.bashrc
PROFILE_FILE="/etc/profile.d/00_lxc-details.sh"
echo "echo -e \"\"" >"$PROFILE_FILE"
echo -e "echo -e \"${BOLD}${APPLICATION} LXC Container${CL}"\" >>"$PROFILE_FILE"
echo -e "echo -e \"${TAB}${GATEWAY}${YW} Provided by: ${GN}community-scripts ORG ${YW}| GitHub: ${GN}https://github.com/community-scripts/ProxmoxVE${CL}\"" >>"$PROFILE_FILE"
echo "echo \"\"" >>"$PROFILE_FILE"
echo -e "echo -e \"${TAB}${OS}${YW} OS: ${GN}\$(grep ^NAME /etc/os-release | cut -d= -f2 | tr -d '\"') - Version: \$(grep ^VERSION_ID /etc/os-release | cut -d= -f2 | tr -d '\"')${CL}\"" >>"$PROFILE_FILE"
cat <<EOF >>"$PROFILE_FILE"
os_display="Unknown OS"
if [ -r /etc/os-release ]; then
. /etc/os-release
os_display="\${PRETTY_NAME:-\${NAME:-Unknown OS}}"
fi
echo -e "${TAB}${OS}${YW} OS: ${GN}\${os_display}${CL}"
EOF
echo -e "echo -e \"${TAB}${HOSTNAME}${YW} Hostname: ${GN}\$(hostname)${CL}\"" >>"$PROFILE_FILE"
echo -e "echo -e \"${TAB}${INFO}${YW} IP Address: ${GN}\$(hostname -I | awk '{print \$1}')${CL}\"" >>"$PROFILE_FILE"