thanks to replaying for me 
I followed Below steps and finally successfully setup frappe and erpnext in my local machine. 
$ mkdir ErpNext
$ cd ErpNext
$ mkdir ErpNext
$ cd ErpNext
:~/ErpNext$ git clone GitHub - frappe/bench: CLI to manage Multi-tenant deployments for Frappe apps bench-repo
:~/ErpNext:$ cd bench-repo
:~/ErpNext/bench-repo$ sudo python setup.py install
OR sudo pip install -e bench-repo
:~/ErpNext/bench-repo$ cd …
:~/ErpNext$bench init frappe-bench --frappe-branch master && cd frappe-bench
:~/ErpNext/frappe-bench$bench get-app erpnext GitHub - frappe/erpnext: Free and Open Source Enterprise Resource Planning (ERP) --branch master
:~/ErpNext/frappe-bench$bench new-site erpnext.dev
:~/ErpNext/frappe-bench$bench --site erpnext.dev install-app erpnext
:~/ErpNext/frappe-bench$bench start
GO on browser and open url:
http://0.0.0.01 : 8000 Or
http://your system ip : 8000
Thank to everyone who replayed me.