Install a Redmine on Ubuntu system

# How to install a Redmine on Ubuntu system

Ref to: https://www.linode.com/docs/applications/project-management/how-to-install-and-configure-redmine-on-ubuntu-16-04

 　　- Change the password of admin user

　　　　Above all, you need to switch into root role

su -

your_password

cd /data/redmine/redmine

RAILS_ENV=production rails c

u = User.first
u.password = "your_new_password"
u.save!