FTP server ubuntu
apt-get install pure-ftpd
conf files will be in /etc/pure-ftpd/
Also vsftpd is very easy to install.
sudo apt-get install vsftpd
Ubuntu - FTP Server
Edit:
sudo useradd ftpuser
sudo passwd ftpuserpassword
The path for the user will be /home/ftpuser. If you need to change it edit /etc/passwd.
To configure vsftpd to authenticate system users and allow them to upload files edit /etc/vsftpd.conf:
local_enable=YES
write_enable=YES
Now restart vsftpd:
sudo /etc/init.d/vsftpd restart