A simple way to implement FTP virtual host under Linux system

#cd wu-ftp
2. Additional functions required for configuration: 
#./configure --enable-virtual 
 This enable-virtual parameter must be set, by setting this parameter, providing virtual host services, while increasing the throughput of the FTP server, so wu-ftp has the function of virtual host. 3. Compile and install 
# make # make install
 Through the above steps, the server has been successfully installed on the Linux system. The system should now contain the 
/etc/ftpaccess /etc/ftpconversions /etc/ftpgroups /etc/ftphosts /etc/ftpusers
 configuration file, as well as 
/usr/bin/ftpcount /usr/bin/Executable programs such as ftpwho /usr/sbin/ftprestart /usr/sbin/ftpshut /usr/sbin/in.ftpd
, of course, also include some help, man documentation. As long as these files are included in the system, the FTP server has been successfully installed. Two of these files are about virtual host configuration, where the ftpservers file controls the server to use different configuration files for feature set when the client logs in to a different virtual host. For example, add the following two statements to ftpservers: 
172.20.66.10 /etc/ftpaccess.1 172.20.66.20 /etc/ftpaccess.2
 These two lines specify the server when the user accesses from 10 IP. The configuration file of ftpaccess.1 is specified, and when the user accesses from 20 IP, the server specifies the configuration file of ftpaccess.2. In the process of configuring a virtual host below, this file needs to be used together.