add some plugins from oh-my-zsh

zsh/functions/install.sh

@@ -91,7 +91,7 @@ if [ ! -d "$PLUGINS_PATH"/fzf-tab ]; then
     echo "fzf-tab is not downloaded. Downloading..."
     git clone https://github.com/Aloxaf/fzf-tab.git "$PLUGINS_PATH"/fzf-tab
 else
-    cd "$PLUGINS_PATH/fzf-tab" || exit 1
+    cd "$PLUGINS_PATH"/fzf-tab || exit 1
     if [ ! -d .git ]; then
         echo "fzf-tab is not a git repository. Please remove $PLUGINS_PATH/fzf-tab and try again."
         exit 1
@@ -101,3 +101,18 @@ else
     fi
 fi
 
+# git clone oh-my-zsh
+if [ ! -d "$PLUGINS_PATH"/ohmyzsh ]; then
+    echo "Oh My Zsh is not downloaded. Downloading..."
+    # git clone https://github.com/ohmyzsh/ohmyzsh.git "$PATH_OHMYZSH"
+    git clone https://gitee.com/mirrors/ohmyzsh.git "$PLUGINS_PATH"/ohmyzsh
+else
+    cd "$PLUGINS_PATH"/ohmyzsh || exit 2
+    if [ ! -d .git ]; then
+        echo "Oh My Zsh is not a git repository. Please remove $PLUGINS_PATH/ohmyzsh and try again."
+        exit 1
+    else
+        echo "Oh My Zsh is already exist. Updating..."
+        git pull
+    fi
+fi