# pip install dnsyo –upgrade
报错,没有pip命令
# wget https://bootstrap.pypa.io/get-pip.py –no-check-certificate
# python get-pip.py
# pip install dnsyo –upgrade
报错
ImportError: No module named argparse
# easy_install argparse
# pip install dnsyo –upgrade

dnsyo -t 100 -q www.51cto.com
报错
/usr/lib/python2.6/site-packages/urllib3/util/ssl_.py……
# pip install requests[security]
报错
……
c/_cffi_backend.c:15:17: error: ffi.h: No such file or directory
……
error: command ‘gcc’ failed with exit status 1
……

# yum install python-devel libevent-devel
# yum install libffi-devel
# pip install requests[security]
# vim /usr/bin/dnsyo //在from pkg_resources import load_entry_point后面添加两行
reload(sys)
sys.setdefaultencoding(‘utf-8’)
# dnsyo –resolverfile /root/dns-list.yaml www.51cto.com -x