diff --git a/init_user.sh b/init_user.sh
index 5804c25..12848b9 100755
--- a/init_user.sh
+++ b/init_user.sh
@@ -8,19 +8,6 @@ scriptdir=$(dirname $(realpath $0))
 
 # ============================================================
 
-update_authorized_keys() {
-    [ ! -f ~/.ssh/authorized_keys ] && return
-
-    local public_keys=$(cat $scriptdir/files/authorized_keys)
-    while IFS= read -r public_key; do
-        [[ $public_key == \#* ]] && continue
-        if ! grep -q "$public_key" ~/.ssh/authorized_keys; then
-            echo "$public_key" >> ~/.ssh/authorized_keys
-            echo "Added public key to authorized_keys: $public_key"
-        fi
-    done <<< "$public_keys"
-}
-
 configure_ssh() {
     [ -f ~/.ssh/authorized_keys ] && return
 
diff --git a/run.sh b/run.sh
index eb28e1e..9fd143a 100755
--- a/run.sh
+++ b/run.sh
@@ -12,15 +12,7 @@ scriptdir=$(dirname $(realpath $0))
 
 git -C $scriptdir pull
 
-update_file $scriptdir/files/zsh/00-init.zsh         ~/.oh-my-zsh/custom/00-init.zsh
-update_file $scriptdir/files/zsh/10-theme.zsh        ~/.oh-my-zsh/custom/10-theme.zsh
-update_file $scriptdir/files/zsh/20-function.zsh     ~/.oh-my-zsh/custom/20-function.zsh
-update_file $scriptdir/files/zsh/50-alias.zsh        ~/.oh-my-zsh/custom/50-alias.zsh
-update_file $scriptdir/files/zsh/80-env.zsh          ~/.oh-my-zsh/custom/80-env.zsh
-update_file $scriptdir/files/zsh/81-proxy.zsh        ~/.oh-my-zsh/custom/81-proxy.zsh
-update_file $scriptdir/files/zsh/90-other.zsh        ~/.oh-my-zsh/custom/90-other.zsh
-update_file $scriptdir/files/zsh/ys-simple.zsh-theme ~/.oh-my-zsh/custom/themes/ys-simple.zsh-theme
-update_authorized_keys
+$scriptdir/update.sh
 
 if [ "$1" = "update" ]; then
     exit 0
diff --git a/update.sh b/update.sh
new file mode 100755
index 0000000..551fc80
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+
+scriptdir=$(dirname $(realpath $0))
+
+# ============================================================
+
+update_file() {
+    local A="$1"
+    local B="$2"
+
+    if [ -f "$A" ] && [ -f "$B" ] && [ "$(cat "$A")" != "$(cat "$B")" ]; then
+        cp "$A" "$B"
+        echo "File $B has been updated."
+    fi
+}
+
+update_authorized_keys() {
+    [ ! -f ~/.ssh/authorized_keys ] && return
+
+    local public_keys=$(cat $scriptdir/files/authorized_keys)
+    while IFS= read -r public_key; do
+        [[ $public_key == \#* ]] && continue
+        if ! grep -q "$public_key" ~/.ssh/authorized_keys; then
+            echo "$public_key" >> ~/.ssh/authorized_keys
+            echo "Added public key to authorized_keys: $public_key"
+        fi
+    done <<< "$public_keys"
+}
+
+# ============================================================
+
+update_file $scriptdir/files/zsh/00-init.zsh         ~/.oh-my-zsh/custom/00-init.zsh
+update_file $scriptdir/files/zsh/10-theme.zsh        ~/.oh-my-zsh/custom/10-theme.zsh
+update_file $scriptdir/files/zsh/20-function.zsh     ~/.oh-my-zsh/custom/20-function.zsh
+update_file $scriptdir/files/zsh/50-alias.zsh        ~/.oh-my-zsh/custom/50-alias.zsh
+update_file $scriptdir/files/zsh/80-env.zsh          ~/.oh-my-zsh/custom/80-env.zsh
+update_file $scriptdir/files/zsh/81-proxy.zsh        ~/.oh-my-zsh/custom/81-proxy.zsh
+update_file $scriptdir/files/zsh/90-other.zsh        ~/.oh-my-zsh/custom/90-other.zsh
+update_file $scriptdir/files/zsh/ys-simple.zsh-theme ~/.oh-my-zsh/custom/themes/ys-simple.zsh-theme
+update_authorized_keys
diff --git a/utils.sh b/utils.sh
index fee831a..b7a1d89 100755
--- a/utils.sh
+++ b/utils.sh
@@ -30,16 +30,6 @@ check_google_access() {
     fi
 }
 
-update_file() {
-    local A="$1"
-    local B="$2"
-
-    if [ -f "$A" ] && [ -f "$B" ] && [ "$(cat "$A")" != "$(cat "$B")" ]; then
-        cp "$A" "$B"
-        echo "File $B has been updated."
-    fi
-}
-
 confirm_action() {
     local prompt="$1"
     local default_response="$2"