Create sftp password access to server Ubuntu 15.04 EC2

gistfile1.txt

List all groups
cut -d: -f1 /etc/group

sudo groupadd sftp

Group Password Authentication
sudo vim /etc/ssh/sshd_config

Match Group sftp
  PasswordAuthentication yes
  # Further directives for users in the "sftp" group

sudo service ssh restart

Add an user to an existing group

sudo useradd -G sftp yourusername
sudo passwd yourusername

passwd yourpasswd

List group users
getent group groupname

Delete user
sudo userdel username

Delete group
sudo groupdel groupname