~增加对ss命令的兼容以替代netstat命令

scripts/libs/get_config.sh

@@ -17,7 +17,7 @@ routing_mark=$((fwmark + 2))
 
 [ -z "$dns_nameserver" ] && {
     dns_nameserver='223.5.5.5, 1.2.4.8'
-    netstat -ntlup 2>/dev/null | grep -q '127.0.0.1:53' && dns_nameserver='127.0.0.1'
+    netstat -ntlup 2>/dev/null | grep -q '127.0.0.1:53' || ss -ntlup 2>/dev/null | grep -q '127.0.0.1:53' && dns_nameserver='127.0.0.1'
 }
 [ -z "$dns_fallback" ] && dns_fallback="1.1.1.1, 8.8.8.8"
 [ -z "$dns_resolver" ] && dns_resolver="223.5.5.5, 2400:3200::1"

scripts/menus/8_tools.sh

@@ -592,10 +592,17 @@ testcommand() {
         2)
             line_break
             echo "==========================================================="
+            if ckcmd netstat;then
                 netstat -ntulp | grep 53
+			elif ckcmd ss;then
+                ss -ntulp | grep 53
+			else
+                echo -e "Neither net-tools nor iproute2 is installed. Please install one of these packages and try again."
+            fi
             echo
             echo -e "$TOOLS_NETSTAT_HINT"
             echo "==========================================================="
+			sleep 2
             ;;
         3)
             line_break

scripts/menus/check_port.sh

@@ -1,13 +1,18 @@
 #!/bin/sh
 # Copyright (C) Juewuy
 
+. "$CRASHDIR"/libs/check_cmd.sh
+
 load_lang check_port
 
 _get_netstat_cmd() {
+    local cmd=netstat
+    ckcmd ss && cmd=ss
+
     case "$1" in
-    tcp) echo "netstat -ntl" ;;
-    udp) echo "netstat -nul" ;;
-    *) echo "netstat -ntul" ;;
+    tcp) echo "$cmd -ntl" ;;
+    udp) echo "$cmd -nul" ;;
+    *) echo "$cmd -ntul" ;;
     esac
 }
 

scripts/menus/dns.sh

@@ -95,7 +95,7 @@ set_dns_mod() {
                     ;;
                 *)
                     if [ "$num" -ge 1 ] && [ "$num" -lt 65535 ]; then
-                        if ckcmd netstat && netstat -ntul | grep -q ":$num "; then
+                        if netstat -ntul 2>/dev/null | grep -q ":$num " || ss -ntul 2>/dev/null | grep -q ":$num "; then
                             dns_redir_port="$num"
                             setconfig dns_redir_port "$dns_redir_port"
                             common_success