ubuntu server vsftpd installation

install vsftpd:
    sudo apt-get install vsftpd

edit vsftpd config file located in /etc:
    sudo nano /etc/vsftpd.conf

make sure the value is the same and the entry is not commented:
to disable anonymous users:
    anonymous_enable=NO
to enable local users:
    local_enable=YES
to allow write on folders:
    write_enable=YES
to restrict users going to other directory except their home directory:
    chroot_local_user=YES

make sure you give proper permission on each home folder by using command below:
    sudo chmod 777 /user_home_folder_here or sudo chmod 755 /user_home_folder_here