diff --git a/README.md b/README.md
index 8bddb98..4712097 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ $ exit; exit # 第一次 exit 退回 root 帳號，第二次 exit 退回剛登
 
 ```sh
 $ wget http://gitlab.tp.rulingcom.com/erictyl/install_r45_on_ubuntu_1804lts_doc/-/raw/master/install_orbit_environment.sh
-$ bash install_orbit_environment.sh #請使用要執行網站的user(須為具有sudo權限之帳號)來執行，執行後會需要輸入user密碼
+$ source install_orbit_environment.sh #請使用要執行網站的user(須為具有sudo權限之帳號)來執行，執行後會需要輸入user密碼
 ## 以下其他內容均不需執行，可直接進行架站或移機
 ```
 
diff --git a/install_orbit_environment.sh b/install_orbit_environment.sh
index d478099..e192287 100644
--- a/install_orbit_environment.sh
+++ b/install_orbit_environment.sh
@@ -1,6 +1,7 @@
 #!/bin/bash
 ubuntu_version=$(lsb_release -rs)
 sudo apt update
+org_pwd=$(pwd)
 if [[ $ubuntu_version =~ '14' ]]; then
 	sudo apt install libgmp-dev -y
 fi
@@ -8,14 +9,21 @@ echo "postfix postfix/mailname string $USER" | sudo debconf-set-selections
 echo "postfix postfix/main_mailer_type string 'Local only'" | sudo debconf-set-selections
 sudo apt-get install -y postfix
 sudo service postfix start
+#install nginx 1.18
 sudo apt install nginx -y
 sudo service nginx restart
 cd /etc/nginx/
 sudo mkdir orbit_sites/
-sudo sed -i 's/\(include\ \/etc\/nginx\/sites-enabled\/\*\;\)/\1\n\tinclude\ \/etc\/nginx\/sites-enabled\/\*\;\n\tinclude\ \/etc\/nginx\/orbit_sites\/*;/g' nginx.conf
+if [ -z "$(grep 'orbit_sites' nginx.conf)" ]; then
+	sudo sed -i 's/\(include\ \/etc\/nginx\/sites-enabled\/\*\;\)/\1\n\tinclude\ \/etc\/nginx\/orbit_sites\/*;/g' nginx.conf
+fi
+cd $org_pwd
 if [[ $ubuntu_version =~ '20' ]] || [[ $ubuntu_version =~ '21' ]]; then
+	sudo wget -nc http://archive.ubuntu.com/ubuntu/pool/main/o/openssl1.0/libssl1.0-dev_1.0.2n-1ubuntu5.7_amd64.deb
+	sudo dpkg -i libssl1.0-dev_1.0.2n-1ubuntu5.7_amd64.deb
 	sudo wget -nc http://archive.ubuntu.com/ubuntu/pool/main/o/openssl1.0/libssl1.0.0_1.0.2n-1ubuntu5.7_amd64.deb
 	sudo dpkg -i libssl1.0.0_1.0.2n-1ubuntu5.7_amd64.deb
+	# install mongod 5.0
 	wget -qO - https://www.mongodb.org/static/pgp/server-5.0.asc | sudo apt-key add -
 	sudo apt-get install gnupg -y
 	echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu focal/mongodb-org/5.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-5.0.list
@@ -23,6 +31,7 @@ if [[ $ubuntu_version =~ '20' ]] || [[ $ubuntu_version =~ '21' ]]; then
 	sudo apt-get install -y mongodb-org=5.0.6 mongodb-org-database=5.0.6 mongodb-org-server=5.0.6 mongodb-org-shell=5.0.6 mongodb-org-mongos=5.0.6 mongodb-org-tools=5.0.6
 	sudo service mongod restart
 fi
+# build ImageMagick and install
 if [ -z $(which convert) ]; then
 	sudo bash -l -c "cd /root && \
 	apt-get install libjpeg62 -y && \
@@ -45,6 +54,7 @@ if [ -z $(which convert) ]; then
 	ln -s /usr/local/bin/* /usr/bin/. && \
 	convert -list configure"
 fi
+## install rvm
 if [ -z $(which rvm) ]; then
 	sudo apt-get install software-properties-common -y
 	sudo apt-add-repository -y ppa:rael-gc/rvm
@@ -55,8 +65,11 @@ if [ -z $(which rvm) ]; then
 	source "/etc/profile.d/rvm.sh"
 	sudo chown $USER:$USER $HOME -R
 	rvm user gemsets
-	rvm install 2.1.10
+	sudo chown $USER:$USER /usr/share/rvm -R
 fi
+source "/etc/profile.d/rvm.sh"
+# install ruby 2.1.10
+rvm install 2.1.10
 rvm --default use 2.1.10
 if [[ $ubuntu_version =~ '20' ]] || [[ $ubuntu_version =~ '21' ]]; then
 	gem install nokogiri -v 1.7.0.1