sudo -H pip install awscli --ignore-installed six
Collecting awscli [..]
Installing collected packages: pyasn1, rsa, futures, jmespath, six, python-dateutil, docutils, botocore, s3transfer, colorama, awscli Successfully installed awscli-1.10.19 botocore-1.4.10 colorama-0.3.3 docutils-0.12 futures-3.0.5 jmespath-0.9.0 pyasn1-0.1.9 python-dateutil-1.5 rsa-3.3 s3transfer-0.0.1 six-1.4.1