letsencryptConsoleLog

. ./letsencrypt-auto --agree-dev-preview --webroot -w path -d domain --server
 https://acme-v01.api.letsencrypt.org/directory auth
dirname: wrong choice -- b
You can get more info „dirname --help“.
Updating letsencrypt and virtual environment dependencies.....Command "/root/.local/share/letsencrypt/bin/python2 -c "import setuptools, tok
enize;__file__='/tmp/pip-build-klPNt6/cffi/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __
file__, 'exec'))" install --record /tmp/pip-Ubl6u3-record/install-record.txt --single-version-externally-managed --compile --install-headers
 /root/.local/share/letsencrypt/include/site/python2.7/cffi" failed with error code 1 in /tmp/pip-build-klPNt6/cffi
.Command "/root/.local/share/letsencrypt/bin/python2 -c "import setuptools, tokenize;__file__='/tmp/pip-build-DhXnKY/cffi/setup.py';exec(com
pile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-8sp3Ti-record/ins
tall-record.txt --single-version-externally-managed --compile --install-headers /root/.local/share/letsencrypt/include/site/python2.7/cffi"
failed with error code 1 in /tmp/pip-build-DhXnKY/cffi

Requesting root privileges to run with virtualenv: /root/.local/share/letsencrypt/bin/letsencrypt --agree-dev-preview --webroot -w path -d domain --server https://acme-v01.api.letsencrypt.org/directory auth

Screen if I want renew

IMPORTANT NOTES:
 - Congratulations! Your certificate and chain have been saved at
   /etc/letsencrypt/live/domain/fullchain.pem. Your cert will
   expire on 2016-04-11. To obtain a new version of the certificate in
   the future, simply run Let's Encrypt again.