perf(misc): optimize network checks, IP detection, and subprocess chains

Files: install.func, alpine-install.func, core.func, api.func

Changes:
- install.func: Cache hostname -I result in setting_up_container() —
  eliminates 3 redundant calls (retry loop + post-check + display).
  Single awk extracts first IP from cached call.

- alpine-install.func: Cache ip addr result in setting_up_container() —
  replaces 3 identical 4-process pipelines (ip|grep|grep|awk|cut) with
  one call using single awk (sub+print in one pass).

- core.func get_lxc_ip(): Merge awk+cut into single awk (sub+print)
  for eth0 IPv4/IPv6 lookups. Replace tr|grep pipeline for IPv6 hostname
  fallback with bash array iteration (read -ra + for loop).

- api.func detect_gpu(): Merge 2x sed + cut into single sed -E + bash
  substring. detect_cpu(): Merge 4x sed + cut into single sed -E + bash
  substring. get_error_text(): Merge 2x sed into single sed -E.
  post_addon_to_api(): Replace 2x grep|cut|tr on /etc/os-release with
  single while-read loop (1 file read instead of 6 subprocess forks).

misc/alpine-install.func

@@ -67,22 +67,22 @@ EOF
 # This function sets up the Container OS by generating the locale, setting the timezone, and checking the network connection
 setting_up_container() {
   msg_info "Setting up Container OS"
+  local _ip=""
   while [ $i -gt 0 ]; do
-    if [ "$(ip addr show | grep 'inet ' | grep -v '127.0.0.1' | awk '{print $2}' | cut -d'/' -f1)" != "" ]; then
-      break
-    fi
+    _ip=$(ip -4 addr show 2>/dev/null | awk '/inet [0-9]/ && !/127\.0\.0\.1/ {sub(/\/.*/, "", $2); print $2; exit}')
+    [[ -n "$_ip" ]] && break
     echo 1>&2 -en "${CROSS}${RD} No Network! "
     sleep $RETRY_EVERY
     i=$((i - 1))
   done
 
-  if [ "$(ip addr show | grep 'inet ' | grep -v '127.0.0.1' | awk '{print $2}' | cut -d'/' -f1)" = "" ]; then
+  if [[ -z "$_ip" ]]; then
     echo 1>&2 -e "\n${CROSS}${RD} No Network After $RETRY_NUM Tries${CL}"
     echo -e "${NETWORK}Check Network Settings"
     exit 121
   fi
   msg_ok "Set up Container OS"
-  msg_ok "Network Connected: ${BL}$(ip addr show | grep 'inet ' | awk '{print $2}' | cut -d'/' -f1 | tail -n1)${CL}"
+  msg_ok "Network Connected: ${BL}${_ip}${CL}"
   post_progress_to_api
 }
 

misc/api.func

@@ -401,7 +401,7 @@ get_error_text() {
   fi
 
   if [[ -n "$logfile" && -s "$logfile" ]]; then
-    tail -n 20 "$logfile" 2>/dev/null | sed 's/\r$//' | sed 's/\x1b\[[0-9;]*[a-zA-Z]//g'
+    tail -n 20 "$logfile" 2>/dev/null | sed -E 's/\r$//; s/\x1b\[[0-9;]*[a-zA-Z]//g'
   fi
 }
 
@@ -508,7 +508,8 @@ detect_gpu() {
 
   if [[ -n "$gpu_line" ]]; then
     # Extract model: everything after the colon, clean up
-    GPU_MODEL=$(echo "$gpu_line" | sed 's/.*: //' | sed 's/ (rev .*)$//' | cut -c1-64)
+    GPU_MODEL=$(echo "$gpu_line" | sed -E 's/.*: //; s/ \(rev .*\)$//')
+    GPU_MODEL="${GPU_MODEL:0:64}"
 
     # Detect vendor and passthrough type
     if echo "$gpu_line" | grep -qi "Intel"; then
@@ -557,7 +558,8 @@ detect_cpu() {
     esac
 
     # Extract model name and clean it up
-    CPU_MODEL=$(grep -m1 "model name" /proc/cpuinfo 2>/dev/null | cut -d: -f2 | sed 's/^ *//' | sed 's/(R)//g' | sed 's/(TM)//g' | sed 's/  */ /g' | cut -c1-64)
+    CPU_MODEL=$(grep -m1 "model name" /proc/cpuinfo 2>/dev/null | cut -d: -f2 | sed -E 's/^ *//; s/\(R\)//g; s/\(TM\)//g; s/  +/ /g')
+    CPU_MODEL="${CPU_MODEL:0:64}"
   fi
 
   export CPU_VENDOR CPU_MODEL
@@ -1325,11 +1327,16 @@ post_addon_to_api() {
     error_category=$(categorize_error "$exit_code")
   fi
 
-  # Detect OS info
+  # Detect OS info (single read)
   local os_type="" os_version=""
   if [[ -f /etc/os-release ]]; then
-    os_type=$(grep "^ID=" /etc/os-release | cut -d= -f2 | tr -d '"')
-    os_version=$(grep "^VERSION_ID=" /etc/os-release | cut -d= -f2 | tr -d '"')
+    while IFS='=' read -r _k _v; do
+      _v="${_v//\"/}"
+      case "$_k" in
+        ID) os_type="$_v" ;;
+        VERSION_ID) os_version="$_v" ;;
+      esac
+    done < /etc/os-release
   fi
 
   local JSON_PAYLOAD

misc/core.func

@@ -1644,7 +1644,7 @@ function get_lxc_ip() {
       local ip
 
       # Try direct interface lookup for eth0 FIRST (most reliable for LXC) - IPv4
-      ip=$(ip -4 addr show eth0 2>/dev/null | awk '/inet / {print $2}' | cut -d/ -f1 | head -n1)
+      ip=$(ip -4 addr show eth0 2>/dev/null | awk '/inet / {sub(/\/.*/, "", $2); print $2; exit}')
       if [[ -n "$ip" && "$ip" =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
         echo "$ip"
         return 0
@@ -1652,11 +1652,14 @@ function get_lxc_ip() {
 
       # Fallback: Try hostname -I (returns IPv4 first if available)
       if command -v hostname >/dev/null 2>&1; then
-        ip=$(hostname -I 2>/dev/null | awk '{print $1}')
-        if [[ -n "$ip" && "$ip" =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
-          echo "$ip"
-          return 0
-        fi
+        local -a _ips
+        read -ra _ips <<<"$(hostname -I 2>/dev/null)"
+        for ip in "${_ips[@]}"; do
+          if [[ "$ip" =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+            echo "$ip"
+            return 0
+          fi
+        done
       fi
 
       # Try routing table with IPv4 targets
@@ -1674,7 +1677,7 @@ function get_lxc_ip() {
       done
 
       # IPv6 fallback: Try direct interface lookup for eth0
-      ip=$(ip -6 addr show eth0 scope global 2>/dev/null | awk '/inet6 / {print $2}' | cut -d/ -f1 | head -n1)
+      ip=$(ip -6 addr show eth0 scope global 2>/dev/null | awk '/inet6 / {sub(/\/.*/, "", $2); print $2; exit}')
       if [[ -n "$ip" && "$ip" =~ : ]]; then
         echo "$ip"
         return 0
@@ -1682,11 +1685,11 @@ function get_lxc_ip() {
 
       # IPv6 fallback: Try hostname -I for IPv6
       if command -v hostname >/dev/null 2>&1; then
-        ip=$(hostname -I 2>/dev/null | tr ' ' '\n' | grep -E ':' | head -n1)
-        if [[ -n "$ip" && "$ip" =~ : ]]; then
-          echo "$ip"
-          return 0
-        fi
+        local -a _ips6
+        read -ra _ips6 <<<"$(hostname -I 2>/dev/null)"
+        for ip in "${_ips6[@]}"; do
+          [[ "$ip" == *:* ]] && { echo "$ip"; return 0; }
+        done
       fi
 
       # IPv6 fallback: Use routing table with IPv6 targets

misc/install.func

@@ -116,14 +116,14 @@ setting_up_container() {
     (chown root:root / 2>/dev/null) || true
   fi
 
+  local _host_ip=""
   for ((i = RETRY_NUM; i > 0; i--)); do
-    if [ "$(hostname -I)" != "" ]; then
-      break
-    fi
+    _host_ip=$(hostname -I 2>/dev/null | awk '{print $1}')
+    [[ -n "$_host_ip" ]] && break
     echo 1>&2 -en "${CROSS}${RD} No Network! "
     sleep $RETRY_EVERY
   done
-  if [ "$(hostname -I)" = "" ]; then
+  if [[ -z "$_host_ip" ]]; then
     echo 1>&2 -e "\n${CROSS}${RD} No Network After $RETRY_NUM Tries${CL}"
     echo -e "${NETWORK}Check Network Settings"
     exit 121
@@ -131,8 +131,7 @@ setting_up_container() {
   rm -rf /usr/lib/python3.*/EXTERNALLY-MANAGED
   systemctl disable -q --now systemd-networkd-wait-online.service
   msg_ok "Set up Container OS"
-  #msg_custom "${CM}" "${GN}" "Network Connected: ${BL}$(hostname -I)"
-  msg_ok "Network Connected: ${BL}$(hostname -I)"
+  msg_ok "Network Connected: ${BL}${_host_ip}"
   post_progress_to_api
 }