–quiet seems to have disappeared from the letsencrypt client.
lxc: davidfavor-lowres # lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.1 LTS
lxc: davidfavor-lowres # letsencrypt --version
lxc: davidfavor-lowres # letsencrypt --quiet
letsencrypt [SUBCOMMAND] [options] [-d domain] [-d domain] …
The Let’s Encrypt agent can obtain and install HTTPS/TLS/SSL certificates. By
default, it will attempt to use a webserver both for obtaining and installing
the cert. Major SUBCOMMANDS are:
(default) run Obtain & install a cert in your current webserver
certonly Obtain cert, but do not install it (aka “auth”)
install Install a previously obtained cert in a server
renew Renew previously obtained certs that are near expiry
revoke Revoke a previously obtained certificate
rollback Rollback server configuration changes made during install
config_changes Show changes made to server config during installation
plugins Display information about installed plugins
letsencrypt: error: unrecognized arguments: --quiet
Requesting --quiet be added back into letsencrypt client.