nginx reverse proxy script

rproxy.sh

#!/bin/bash

if [[ ! $3 ]]
then
 echo "Usage ./rproxy.sh name ip port"
 exit 1
fi

if [[ -f /etc/nginx/sites-enabled/$1 ]]
then
 echo "_______________________________________________"
 echo " "
 echo " cat /etc/nginx/sites-enabled/$1 "
 echo "_______________________________________________"
 cat /etc/nginx/sites-enabled/$1
 echo "_______________________________________________"
 echo " "
 read -p "Le fichier existe remplacer ? (y/n) " -n 1 -r
 echo    # (optional) move to a new line
 if [[ $REPLY =~ ^[Yy]$ ]]
 then
  echo "File will be overwrited"
 else
  echo "Abord"
  exit 1
 fi
fi
echo "
#Automaticaly added by a super script

server {

        listen 80;
        server_name $1 www.$1;
        access_log /var/log/nginx/$1.access.log;
        location / {
                proxy_pass http://$2:$3/;
        }
}
" > /etc/nginx/sites-enabled/$1

/etc/init.d/nginx reload