diff --git a/ubuntu_mates.sh b/ubuntu_mates.sh
index fe3c432..08956aa 100644
--- a/ubuntu_mates.sh
+++ b/ubuntu_mates.sh
@@ -2,3 +2,9 @@
 
 # Faster Ubuntu APT repository server for Korean
 sudo sed -i 's/kr.archive.ubuntu.com/mirror.kakao.com/g' /etc/apt/sources.list
+
+# essential packages
+sudo apt install -y nnn zsh ncdu htop rsync
+
+# Installation of om my zsh 
+sh -c "$(curl -fsSL https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"