これはなかなか便利

Show status of all fail2ban jails at once
Show status of all fail2ban jails at once. GitHub Gist: instantly share code, notes, and snippets.
fail2ban-client status | sed -n 's/,//g;s/.*Jail list://p' | xargs -n1 fail2ban-client status
Nice. Needs sudo, so
sudo sh -c "fail2ban-client status | sed -n 's/,//g;s/.*Jail list://p' | xargs -n1 fail2ban-client status"
watchコマンドでモニターしたければ
watch "fail2ban-client status | sed -n 's/,//g;s/.*Jail list://p' | xargs -n1 fail2ban-client status"
もしくはシェルスクリプトとして記述して
watch fail2ban_allstatus.sh
とか
