diff --git a/.github/workflows/student-image-build.yml b/.github/workflows/student-image-build.yml
index 975b9a1..6da2cf7 100644
--- a/.github/workflows/student-image-build.yml
+++ b/.github/workflows/student-image-build.yml
@@ -30,4 +30,4 @@ jobs:
           file: ./resources/images/student-ubuntu/Dockerfile
           platforms: linux/amd64
           push: true
-          tags: ryann3/student-ubuntu:6.0
+          tags: ryann3/student-ubuntu:7.0
diff --git a/resources/images/control-ubuntu/.env b/resources/images/control-ubuntu/.env
index 76d3e15..e385a5b 100644
--- a/resources/images/control-ubuntu/.env
+++ b/resources/images/control-ubuntu/.env
@@ -13,8 +13,8 @@ KUBE_BASE_URL=http://moaroom-infra.duckdns.org
 BASE_URL=http://moaroom-back.duckdns.org:8080
 STUDENT_BASE_URL=http://${STUDENT_SVC}.${STUDENT_NS}.svc.cluster.local:${STUDENT_SERVER_PORT}
 
-DIR_PATH_STUDENT=/root/assignment
-DIR_PATH_PROFESSOR=/root/assignment
+DIR_PATH_STUDENT=/root/assignments
+DIR_PATH_PROFESSOR=/root/assignments
 
 APISERVER=https://kubernetes.default.svc # Point to the internal API server hostname
 SERVICEACCOUNT=/var/run/secrets/kubernetes.io/serviceaccount # Path to ServiceAccount token
diff --git a/resources/images/control-ubuntu/server/res/remote-deploy-student.yml b/resources/images/control-ubuntu/server/res/remote-deploy-student.yml
index 18c4003..231c8f4 100644
--- a/resources/images/control-ubuntu/server/res/remote-deploy-student.yml
+++ b/resources/images/control-ubuntu/server/res/remote-deploy-student.yml
@@ -8,7 +8,7 @@ metadata:
 spec:
   containers:
     - name: student-{{ ID }}
-      image: ryann3/student-ubuntu:6.0
+      image: ryann3/student-ubuntu:7.0
       imagePullPolicy: Always
       ports:
         - name: nginx-port
diff --git a/resources/images/professor-ubuntu/.env b/resources/images/professor-ubuntu/.env
index 18d7e51..121f5a2 100644
--- a/resources/images/professor-ubuntu/.env
+++ b/resources/images/professor-ubuntu/.env
@@ -13,8 +13,8 @@ KUBE_BASE_URL=http://moaroom-infra.duckdns.org
 BASE_URL=http://moaroom-back.duckdns.org:8080
 STUDENT_BASE_URL=http://${STUDENT_SVC}.${STUDENT_NS}.svc.cluster.local:${STUDENT_SERVER_PORT}
 
-DIR_PATH_STUDENT=/root/assignment
-DIR_PATH_PROFESSOR=/root/assignment
+DIR_PATH_STUDENT=/root/assignments
+DIR_PATH_PROFESSOR=/root/assignments
 
 APISERVER=https://kubernetes.default.svc # Point to the internal API server hostname
 SERVICEACCOUNT=/var/run/secrets/kubernetes.io/serviceaccount # Path to ServiceAccount token
diff --git a/resources/images/student-ubuntu/.env b/resources/images/student-ubuntu/.env
index 18d7e51..121f5a2 100644
--- a/resources/images/student-ubuntu/.env
+++ b/resources/images/student-ubuntu/.env
@@ -13,8 +13,8 @@ KUBE_BASE_URL=http://moaroom-infra.duckdns.org
 BASE_URL=http://moaroom-back.duckdns.org:8080
 STUDENT_BASE_URL=http://${STUDENT_SVC}.${STUDENT_NS}.svc.cluster.local:${STUDENT_SERVER_PORT}
 
-DIR_PATH_STUDENT=/root/assignment
-DIR_PATH_PROFESSOR=/root/assignment
+DIR_PATH_STUDENT=/root/assignments
+DIR_PATH_PROFESSOR=/root/assignments
 
 APISERVER=https://kubernetes.default.svc # Point to the internal API server hostname
 SERVICEACCOUNT=/var/run/secrets/kubernetes.io/serviceaccount # Path to ServiceAccount token
diff --git a/resources/images/student-ubuntu/Dockerfile b/resources/images/student-ubuntu/Dockerfile
index 480ff49..5f1c03a 100644
--- a/resources/images/student-ubuntu/Dockerfile
+++ b/resources/images/student-ubuntu/Dockerfile
@@ -19,7 +19,7 @@ RUN apt-get dist-upgrade
 
 
 RUN echo "deb http://archive.ubuntu.com/ubuntu vivid main restricted universe" >> /etc/apt/sources.list # libffi-dev
-RUN apt-get install -y ssh openssh-server sudo curl vim git openssh-client telnet net-tools nginx python3.8 python3-pip libc-dev libffi-dev gcc tzdata
+RUN apt-get install -y ssh openssh-server sudo curl vim git openssh-client telnet net-tools nginx python3.8 python3-pip libc-dev libffi-dev gcc tzdata tree shc
 
 ## TZ
 ENV TZ=Asia/Seoul
@@ -64,8 +64,9 @@ RUN pip3 install -r ./server/requirements.txt
 
 EXPOSE 8001-8886
 
-## run ssh connection and nginx with startup.sh
+## change permissions of executable files
 RUN chmod +x /root/workdir/startup.sh
+RUN chmod +x /root/workdir/moaroom.sh
 RUN chmod +x /root/workdir/webssh/run.py
 RUN chmod +x /root/workdir/server/main.py
 CMD ["./startup.sh"]
@@ -81,4 +82,5 @@ CMD ["./startup.sh"]
 ### 4.1: change rep type from model to dict
 ### 4.2: added timezone
 ## 5.0: Deploy version
-## 6.0: NodePort version
\ No newline at end of file
+## 6.0: NodePort version
+## 7.0: moaroom cli version
\ No newline at end of file
diff --git a/resources/images/student-ubuntu/moaroom.sh b/resources/images/student-ubuntu/moaroom.sh
new file mode 100644
index 0000000..b92bc91
--- /dev/null
+++ b/resources/images/student-ubuntu/moaroom.sh
@@ -0,0 +1,82 @@
+#! /bin/bash
+ROOT_PATH="$(pwd)"
+TARGET_ASSIGNMENT="default"
+
+sed_inplace() {
+  # BSD sed and GNU sed implements the "-i" option differently.
+  case "$OSTYPE" in
+    darwin*) sed -i '' "$@" ;;
+    bsd*) sed -i '' "$@" ;;
+    *) sed -i "$@" ;;
+  esac
+}
+
+usage() {
+  echo "How to use MoaRoom CLI: MoaRoom CLI Tool"
+  echo ""
+  echo ""
+  echo "USAGE"
+  echo "  $0 [OPTIONS]"
+  echo ""
+  echo "OPTIONS"
+  echo "  -h, --help"
+  echo "    Show this help message and exit"
+  echo ""
+  echo "  -g, --show-guide"
+  echo "    Show the guide of MoaRoom and exit"
+  echo ""
+  echo "  -l, --list-assignments"
+  echo "    List assignments of this lecture"
+  echo ""
+  echo "  -t, --tree-assignments"
+  echo "    List assignments of this lecture with tree-style"
+  echo ""
+  echo "  -m, --to-assignment"
+  echo "    Move to specific assignment directory"
+  echo "    Can cd to assignment directory by number of listed assignments"
+  echo ""
+}
+
+show_guide() {
+  echo "MoaRoom Guide: How to use MoaRoom!"
+  echo "1. Go to a specific assignment directory by using the cli command"
+  echo "    You can use moaroom -h | --help to see how to use it"
+
+}
+list_assignments(){
+    lines=$((`ls -l assignment/ | wc -l`-1))
+    for ((l=1 ; l <= $((lines)) ; l++));
+        do
+        directory=`ls -l assignment/ | awk 'NR=='"$((l+1))"' {print $9}'`
+        echo "$l. $directory"
+        done
+    echo ""
+    echo "Remember the number and get the cmd line with -m | --to-assignment option"
+}
+tree_assignments(){
+    tree "${DIR_PATH_STUDENT}"
+}
+to_assignment(){
+    directory=`ls -l assignment/ | awk 'NR=='"$((TARGET_ASSIGNMENT+1))"' {print $9}'`
+    echo "Run this on terminal"
+    echo "cd \"${DIR_PATH_STUDENT}/${directory}\""
+    
+}
+
+while [ $# -gt 0 ]; do
+  case $1 in
+    -h | --help)              usage; exit 1 ;;
+    -g | --show-guide)        show_guide; exit 1 ;;
+    -l | --list-assignments)  list_assignments; exit 1 ;;
+    -t | --tree-assignments)  tree_assignments; exit 1 ;;
+    -m)                       TARGET_ASSIGNMENT=$2; to_assignment; shift ;;
+    -m=*)                     TARGET_ASSIGNMENT="${1#*=}"; to_assignment ;;
+    --to-assignment)          TARGET_ASSIGNMENT=$2; to_assignment; shift ;;
+    --to-assignment=*)        TARGET_ASSIGNMENT="${1#*=}"; to_assignment ;;
+    *)
+      echo "Unknown option: $1"
+      echo "Run '$0 --help' for usage."
+      exit 1
+  esac
+  shift
+done
diff --git a/resources/images/student-ubuntu/startup.sh b/resources/images/student-ubuntu/startup.sh
index 4f5d442..a417dd8 100644
--- a/resources/images/student-ubuntu/startup.sh
+++ b/resources/images/student-ubuntu/startup.sh
@@ -5,10 +5,13 @@ while read line || [ -n "$line" ] ; do
   echo "export $line > /dev/null 2>&1" >> /etc/profile 
   ((i+=1))
 done < ./.env
-source /etc/profile > /dev/null 2>&1
 
-# no welcome message
-chmod -x /etc/update-motd.d/*
+# MoaRoom CLI 
+alias moaroom="/root/workdir/moaroom.sh"
+echo "alias moaroom=\"/root/workdir/moaroom.sh\"" >> /etc/profile
+
+# source env variables
+source /etc/profile > /dev/null 2>&1
 
 # # ssl configuration
 # mkdir -p /etc/nginx/ssl
@@ -26,6 +29,9 @@ echo "root:${SSH_PASSWORD}" | chpasswd
 mkdir -p /run/nginx
 echo "<h1>THIS NGINX INDEX.HTML</h1>" >> /var/www/html/index.html
 
+# no welcome message
+chmod -x /etc/update-motd.d/*
+
 # Banner
 cp /root/workdir/motd /etc/issue.net # 원격 접속 시도 시
 cp /root/workdir/motd /etc/issue     # 콘솔 접속 시도 시
diff --git a/resources/res/.env b/resources/res/.env
index 53bc912..852d936 100644
--- a/resources/res/.env
+++ b/resources/res/.env
@@ -13,8 +13,8 @@ KUBE_BASE_URL=http://af3a1a2d769ff4be9991c752a7a41937-923523649.ap-northeast-2.e
 BASE_URL=http://moaroom-back.duckdns.org:8080
 STUDENT_BASE_URL=http://${STUDENT_SVC}.${STUDENT_NS}.svc.cluster.local:${STUDENT_SERVER_PORT}
 
-DIR_PATH_STUDENT=/root/assignment
-DIR_PATH_PROFESSOR=/root/assignment
+DIR_PATH_STUDENT=/root/assignments
+DIR_PATH_PROFESSOR=/root/assignments
 
 APISERVER=https://kubernetes.default.svc # Point to the internal API server hostname
 SERVICEACCOUNT=/var/run/secrets/kubernetes.io/serviceaccount # Path to ServiceAccount token