Ubuntu setup ftp server.

http://www.cnblogs.com/bcsflilong/p/4200139.html

Steps

1.　　Install vsftpd

sudo apt-get install vsftpd

2.　　backup the config file

sudo cp /etc/vsftpd.conf /etc/vsftpd.conf.old

3.　　modify The config file

anonymous_enable=NO
local_root=/home/xxx/share
local_enable=yes
chroot_list_enable=YES
chroot_list_file=/etc/vsftpd.chroot_list

4.　　Restart ftp

sudo service vsftpd restart

for more information See links