optimize perpare scripts, update simple-term-menu

main.py

@@ -208,7 +208,7 @@ def config_init(args):
     disable_aead_verify = "N"
     # 选择传输层协议
     protocol_options = ["socks5", "vmess", "trojan", "shadowsocks", "vmess-socks5"]
-    protocol_menu = TerminalMenu(protocol_options, title="请选择你要制作的协议").show()
+    protocol_menu = TerminalMenu(protocol_options, title="请选择你要制作的协议(按上下键移动，回车选择)").show()
     protocol = protocol_options[protocol_menu]
 
     advanced_configuration = "N"

prepare.sh

@@ -134,12 +134,16 @@ basic_optimization() {
 
   ulimit -SHn 10240
   ulimit -SHs unlimited
-  echo '500000' > /proc/sys/net/nf_conntrack_max
+  echo '500000' > /proc/sys/net/netfilter/nf_conntrack_max
 
   # 关闭 Selinux
   if [[ "${ID}" == "centos" ]]; then
-    sed -i 's/^SELINUX=.*/SELINUX=disabled/' /etc/selinux/config
-    setenforce 0 && echo -e "${OK} ${Green} 已经关闭selinux ${Font}" || echo -e "${Error} ${RedBG} 关闭selinux出错 ${Font}"
+    if command -v getenforce &> /dev/null; then
+      sed -i 's/^SELINUX=.*/SELINUX=disabled/' /etc/selinux/config
+      setenforce 0 && echo "已经关闭selinux" || echo "关闭selinux出错"
+    else
+      echo "SELinux 未安装，无需关闭"
+    fi
   fi
 
 }

requirements.txt

@@ -1,2 +1,2 @@
 psutil==6.1.0
-simple-term-menu==1.6.4
+simple-term-menu==1.6.6