vsftpd - Very Secure FTP Daemon
vsftpd [configuration file and / or options]
vsftpd is the Very Secure File Transfer Protocol Daemon. The server can
be launched via a ``super-server'' such as inetd(8) or xinetd(8).
Alternatively, vsftpd can be launched in standalone mode, in which case
vsftpd itself will listen on the network. This latter mode is easier to
use, and recommended. It is activated by setting listen=YES in
/etc/vsftpd.conf. Direct execution of the vsftpd binary will then launch
the FTP service ready for immediate client connections.
An optional configuration file or files may be given on the command line.
These files must be owned as root if running as root. Any command line
option not starting with a "-" character is treated as a config file that
will be loaded. Note that config files are loaded in the strict order
that they are encountered on the command line. If no config files are
specified, the default configuration file of /etc/vsftpd.conf will be
loaded, after all other command line options are processed.
Supported options are:
-v Print the version information and exit, even if other options are
Set a single option, value pair as per the format in the config
file. Multiple -o options are supported, and they are applied in
strict order relative to their appearance on the command line,
including intermingling with loading of config files.
vsftpd -olisten=NO /etc/vsftpd.conf -oftpd_banner=blah
That example overrides vsftpd's built-in default for the "listen" option
to be NO, but then loads /etc/vsftpd.conf which may override that
setting. Finally, the "ftpd_banner" setting is set to "blah", which
overrides any default vsftpd setting and any identical setting that was
in the config file.