fail2ban-server --version (return code: 0)
Fail2Ban v0.9.7 Copyright (c) 2004-2008 Cyril Jaquier, 2008- Fail2Ban Contributors Copyright of modifications held by their respective authors. Licensed under the GNU General Public License v2 (GPL). Written by Cyril Jaquier <firstname.lastname@example.org>. Many contributions by Yaroslav O. Halchenko <email@example.com>.
fail2ban-server --help (return code: 0)
Usage: /usr/bin/fail2ban-server [OPTIONS] Fail2Ban v0.9.7 reads log file that contains password failure report and bans the corresponding IP addresses using firewall rules. Only use this command for debugging purpose. Start the server with fail2ban-client instead. The default behaviour is to start the server in background. Options: -b start in background -f start in foreground -s <FILE> socket path -p <FILE> pidfile path -x force execution of the server (remove socket file) -h, --help display this help message -V, --version print the version Report bugs to https://github.com/fail2ban/fail2ban/issues