   usage: 
     certbot [SUBCOMMAND] [options] [-d domain] [-d domain] ...

   Certbot 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
     register             Perform tasks related to registering with the CA
     rollback             Rollback server configuration changes made during install
     config_changes       Show changes made to server config during installation
     plugins              Display information about installed plugins

   optional arguments:
     -h, --help            show this help message and exit
     -c CONFIG_FILE, --config CONFIG_FILE
                           config file path (default: None)
     -v, --verbose         This flag can be used multiple times to incrementally
                           increase the verbosity of output, e.g. -vvv. (default:
                           -3)
     -t, --text            Use the text output instead of the curses UI.
                           (default: False)
     -n, --non-interactive, --noninteractive
                           Run without ever asking for user input. This may
                           require additional command line flags; the client will
                           try to explain which ones are required if it finds one
                           missing (default: False)
     --dialog              Run using dialog (default: False)
     --dry-run             Perform a test run of the client, obtaining test
                           (invalid) certs but not saving them to disk. This can
                           currently only be used with the 'certonly' and 'renew'
                           subcommands. Note: Although --dry-run tries to avoid
                           making any persistent changes on a system, it is not
                           completely side-effect free: if used with webserver
                           authenticator plugins like apache and nginx, it makes
                           and then reverts temporary config changes in order to
                           obtain test certs, and reloads webservers to deploy
                           and then roll back those changes. It also calls --pre-
                           hook and --post-hook commands if they are defined
                           because they may be necessary to accurately simulate
                           renewal. --renew-hook commands are not called.
                           (default: False)
     --register-unsafely-without-email
                           Specifying this flag enables registering an account
                           with no email address. This is strongly discouraged,
                           because in the event of key loss or account compromise
                           you will irrevocably lose access to your account. You
                           will also be unable to receive notice about impending
                           expiration or revocation of your certificates. Updates
                           to the Subscriber Agreement will still affect you, and
                           will be effective 14 days after posting an update to
                           the web site. (default: False)
     --update-registration
                           With the register verb, indicates that details
                           associated with an existing registration, such as the
                           e-mail address, should be updated, rather than
                           registering a new account. (default: False)
     -m EMAIL, --email EMAIL
                           Email used for registration and recovery contact.
                           (default: None)
     -d DOMAIN, --domains DOMAIN, --domain DOMAIN
                           Domain names to apply. For multiple domains you can
                           use multiple -d flags or enter a comma separated list
                           of domains as a parameter. (default: [])
     --user-agent USER_AGENT
                           Set a custom user agent string for the client. User
                           agent strings allow the CA to collect high level
                           statistics about success rates by OS and plugin. If
                           you wish to hide your server OS version from the Let's
                           Encrypt server, set this to "". (default: None)

   automation:
     Arguments for automating execution & other tweaks

     --keep-until-expiring, --keep, --reinstall
                           If the requested cert matches an existing cert, always
                           keep the existing one until it is due for renewal (for
                           the 'run' subcommand this means reinstall the existing
                           cert) (default: False)
     --expand              If an existing cert covers some subset of the
                           requested names, always expand and replace it with the
                           additional names. (default: False)
     --version             show program's version number and exit
     --force-renewal, --renew-by-default
                           If a certificate already exists for the requested
                           domains, renew it now, regardless of whether it is
                           near expiry. (Often --keep-until-expiring is more
                           appropriate). Also implies --expand. (default: False)
     --allow-subset-of-names
                           When performing domain validation, do not consider it
                           a failure if authorizations can not be obtained for a
                           strict subset of the requested domains. This may be
                           useful for allowing renewals for multiple domains to
                           succeed even if some domains no longer point at this
                           system. This option cannot be used with --csr.
                           (default: False)
     --agree-tos           Agree to the ACME Subscriber Agreement (default:
                           False)
     --account ACCOUNT_ID  Account ID to use (default: None)
     --duplicate           Allow making a certificate lineage that duplicates an
                           existing one (both can be renewed in parallel)
                           (default: False)
     --os-packages-only    (letsencrypt-auto only) install OS package
                           dependencies and then stop (default: False)
     --no-self-upgrade     (letsencrypt-auto only) prevent the letsencrypt-auto
                           script from upgrading itself to newer released
                           versions (default: False)
     -q, --quiet           Silence all output except errors. Useful for
                           automation via cron. Implies --non-interactive.
                           (default: False)

   testing:
     The following flags are meant for testing purposes only! Do NOT change
     them, unless you really know what you're doing!

     --debug               Show tracebacks in case of errors, and allow
                           letsencrypt-auto execution on experimental platforms
                           (default: False)
     --no-verify-ssl       Disable SSL certificate verification. (default: False)
     --tls-sni-01-port TLS_SNI_01_PORT
                           Port number to perform tls-sni-01 challenge. Boulder
                           in testing mode defaults to 5001. (default: 443)
     --http-01-port HTTP01_PORT
                           Port used in the SimpleHttp challenge. (default: 80)
     --break-my-certs      Be willing to replace or renew valid certs with
                           invalid (testing/staging) certs (default: False)
     --test-cert, --staging
                           Use the staging server to obtain test (invalid) certs;
                           equivalent to --server https://acme-
                           staging.api.letsencrypt.org/directory (default: False)

   security:
     Security parameters & server settings

     --rsa-key-size N      Size of the RSA key. (default: 2048)
     --must-staple         Adds the OCSP Must Staple extension to the
                           certificate. Autoconfigures OCSP Stapling for
                           supported setups (Apache version >= 2.3.3 ). (default:
                           False)
     --redirect            Automatically redirect all HTTP traffic to HTTPS for
                           the newly authenticated vhost. (default: None)
     --no-redirect         Do not automatically redirect all HTTP traffic to
                           HTTPS for the newly authenticated vhost. (default:
                           None)
     --hsts                Add the Strict-Transport-Security header to every HTTP
                           response. Forcing browser to use always use SSL for
                           the domain. Defends against SSL Stripping. (default:
                           False)
     --no-hsts             Do not automatically add the Strict-Transport-Security
                           header to every HTTP response. (default: False)
     --uir                 Add the "Content-Security-Policy: upgrade-insecure-
                           requests" header to every HTTP response. Forcing the
                           browser to use https:// for every http:// resource.
                           (default: None)
     --no-uir              Do not automatically set the "Content-Security-Policy:
                           upgrade-insecure-requests" header to every HTTP
                           response. (default: None)
     --staple-ocsp         Enables OCSP Stapling. A valid OCSP response is
                           stapled to the certificate that the server offers
                           during TLS. (default: None)
     --no-staple-ocsp      Do not automatically enable OCSP Stapling. (default:
                           None)
     --strict-permissions  Require that all configuration files are owned by the
                           current user; only needed if your config is somewhere
                           unsafe like /tmp/ (default: False)

   renew:
     The 'renew' subcommand will attempt to renew all certificates (or more
     precisely, certificate lineages) you have previously obtained if they are
     close to expiry, and print a summary of the results. By default, 'renew'
     will reuse the options used to create obtain or most recently successfully
     renew each certificate lineage. You can try it with `--dry-run` first. For
     more fine-grained control, you can renew individual lineages with the
     `certonly` subcommand. Hooks are available to run commands before and
     after renewal; see https://certbot.eff.org/docs/using.html#renewal for
     more information on these.

     --pre-hook PRE_HOOK   Command to be run in a shell before obtaining any
                           certificates. Intended primarily for renewal, where it
                           can be used to temporarily shut down a webserver that
                           might conflict with the standalone plugin. This will
                           only be called if a certificate is actually to be
                           obtained/renewed. (default: None)
     --post-hook POST_HOOK
                           Command to be run in a shell after attempting to
                           obtain/renew certificates. Can be used to deploy
                           renewed certificates, or to restart any servers that
                           were stopped by --pre-hook. This is only run if an
                           attempt was made to obtain/renew a certificate.
                           (default: None)
     --renew-hook RENEW_HOOK
                           Command to be run in a shell once for each
                           successfully renewed certificate.For this command, the
                           shell variable $RENEWED_LINEAGE will point to
                           theconfig live subdirectory containing the new certs
                           and keys; the shell variable $RENEWED_DOMAINS will
                           contain a space-delimited list of renewed cert domains
                           (default: None)
     --disable-hook-validation
                           Ordinarily the commands specified for --pre-hook
                           /--post-hook/--renew-hook will be checked for
                           validity, to see if the programs being run are in the
                           $PATH, so that mistakes can be caught early, even when
                           the hooks aren't being run just yet. The validation is
                           rather simplistic and fails if you use more advanced
                           shell constructs, so you can use this switch to
                           disable it. (default: True)

   certonly:
     Options for modifying how a cert is obtained

     --csr CSR             Path to a Certificate Signing Request (CSR) in DER
                           format; note that the .csr file *must* contain a
                           Subject Alternative Name field for each domain you
                           want certified. Currently --csr only works with the
                           'certonly' subcommand' (default: None)

   install:
     Options for modifying how a cert is deployed

   revoke:
     Options for revocation of certs

   rollback:
     Options for reverting config changes

     --checkpoints N       Revert configuration N number of checkpoints.
                           (default: 1)

   plugins:
     Plugin options

     --init                Initialize plugins. (default: False)
     --prepare             Initialize and prepare plugins. (default: False)
     --authenticators      Limit to authenticator plugins only. (default: None)
     --installers          Limit to installer plugins only. (default: None)

   config_changes:
     Options for showing a history of config changes

     --num NUM             How many past revisions you want to be displayed
                           (default: None)

   paths:
     Arguments changing execution paths & servers

     --cert-path CERT_PATH
                           Path to where cert is saved (with auth --csr),
                           installed from or revoked. (default: None)
     --key-path KEY_PATH   Path to private key for cert installation or
                           revocation (if account key is missing) (default: None)
     --fullchain-path FULLCHAIN_PATH
                           Accompanying path to a full certificate chain (cert
                           plus chain). (default: None)
     --chain-path CHAIN_PATH
                           Accompanying path to a certificate chain. (default:
                           None)
     --config-dir CONFIG_DIR
                           Configuration directory. (default: /etc/letsencrypt)
     --work-dir WORK_DIR   Working directory. (default: /var/lib/letsencrypt)
     --logs-dir LOGS_DIR   Logs directory. (default: /var/log/letsencrypt)
     --server SERVER       ACME Directory Resource URI. (default:
                           https://acme-v01.api.letsencrypt.org/directory)

   plugins:
     Certbot client supports an extensible plugins architecture. See 'certbot
     plugins' for a list of all installed plugins and their names. You can
     force a particular plugin by setting options provided below. Running
     --help <plugin_name> will list flags specific to that plugin.

     -a AUTHENTICATOR, --authenticator AUTHENTICATOR
                           Authenticator plugin name. (default: None)
     -i INSTALLER, --installer INSTALLER
                           Installer plugin name (also used to find domains).
                           (default: None)
     --configurator CONFIGURATOR
                           Name of the plugin that is both an authenticator and
                           an installer. Should not be used together with
                           --authenticator or --installer. (default: None)
     --apache              Obtain and install certs using Apache (default: False)
     --nginx               Obtain and install certs using Nginx (default: False)
     --standalone          Obtain certs using a "standalone" webserver. (default:
                           False)
     --manual              Provide laborious manual instructions for obtaining a
                           cert (default: False)
     --webroot             Obtain certs by placing files in a webroot directory.
                           (default: False)

   standalone:
     Automatically use a temporary webserver

     --standalone-supported-challenges STANDALONE_SUPPORTED_CHALLENGES
                           Supported challenges. Preferred in the order they are
                           listed. (default: tls-sni-01,http-01)

   manual:
     Manually configure an HTTP server

     --manual-test-mode    Test mode. Executes the manual command in subprocess.
                           (default: False)
     --manual-public-ip-logging-ok
                           Automatically allows public IP logging. (default:
                           False)

   nginx:
     Nginx Web Server - currently doesn't work

     --nginx-server-root NGINX_SERVER_ROOT
                           Nginx server root directory. (default: /etc/nginx)
     --nginx-ctl NGINX_CTL
                           Path to the 'nginx' binary, used for 'configtest' and
                           retrieving nginx version number. (default: nginx)

   webroot:
     Place files in webroot directory

     --webroot-path WEBROOT_PATH, -w WEBROOT_PATH
                           public_html / webroot path. This can be specified
                           multiple times to handle different domains; each
                           domain will have the webroot path that preceded it.
                           For instance: `-w /var/www/example -d example.com -d
                           www.example.com -w /var/www/thing -d thing.net -d
                           m.thing.net` (default: [])
     --webroot-map WEBROOT_MAP
                           JSON dictionary mapping domains to webroot paths; this
                           implies -d for each entry. You may need to escape this
                           from your shell. E.g.: --webroot-map
                           '{"eg1.is,m.eg1.is":"/www/eg1/", "eg2.is":"/www/eg2"}'
                           This option is merged with, but takes precedence over,
                           -w / -d entries. At present, if you put webroot-map in
                           a config file, it needs to be on a single line, like:
                           webroot-map = {"example.com":"/var/www"}. (default:
                           {})

   apache:
     Apache Web Server - Alpha

     --apache-enmod APACHE_ENMOD
                           Path to the Apache 'a2enmod' binary. (default:
                           a2enmod)
     --apache-dismod APACHE_DISMOD
                           Path to the Apache 'a2dismod' binary. (default:
                           a2dismod)
     --apache-le-vhost-ext APACHE_LE_VHOST_EXT
                           SSL vhost configuration extension. (default: -le-
                           ssl.conf)
     --apache-server-root APACHE_SERVER_ROOT
                           Apache server root directory. (default: /etc/apache2)
     --apache-vhost-root APACHE_VHOST_ROOT
                           Apache server VirtualHost configuration root (default:
                           /etc/apache2/sites-available)
     --apache-challenge-location APACHE_CHALLENGE_LOCATION
                           Directory path for challenge configuration. (default:
                           /etc/apache2)
     --apache-handle-modules APACHE_HANDLE_MODULES
                           Let installer handle enabling required modules for
                           you.(Only Ubuntu/Debian currently) (default: True)
     --apache-handle-sites APACHE_HANDLE_SITES
                           Let installer handle enabling sites for you.(Only
                           Ubuntu/Debian currently) (default: True)

   null:
     Null Installer
