diff --git a/init_root.sh b/init_root.sh
index a14600e..5c3421c 100755
--- a/init_root.sh
+++ b/init_root.sh
@@ -1,7 +1,38 @@
 #!/bin/bash
 
-scriptdir=$(dirname $(realpath $0))
+check_google_access() {
+    abroad=0
+    local response=$(curl -s -o /dev/null -w "%{http_code}" -m 5 "http://www.google.com")
 
-mkdir -p ~/.ssh
-cat $scriptdir/files/authorized_keys >> ~/.ssh/authorized_keys
+    if [ "$response" -eq 200 ]; then
+        echo "Intenet: abroad"
+        abroad=1
+    else
+        echo "Intenet: internal"
+        abroad=0
+    fi
+}
 
+configure_ssh() {
+    read -p "要配置 .ssh 吗？[Y/n]: " response
+
+    if [[ -z "$response" ]] || [[ $response =~ ^[Yy]$ ]]; then
+        mkdir -p ~/.ssh
+        cp $scriptdir/files/authorized_keys ~/.ssh/authorized_keys
+    fi
+}
+
+configure_ssh_keygen() {
+    read -p "要生成 sshkey 吗？[Y/n]: " response
+
+    if [[ -z "$response" ]] || [[ $response =~ ^[Yy]$ ]]; then
+        mkdir -p ~/.ssh
+        ssh-keygen -t ed25519 -C "ubuntu"
+    fi
+}
+
+check_google_access
+configure_ssh
+configure_ssh_keygen
+
+# scriptdir=$(dirname $(realpath $0))