ssh config hosts

ssh_list.py

import os.path, re

filename = os.path.expanduser("~/.ssh/config")
hosts = []

file = open(filename, 'rb')
contents = file.read()
for line in contents.split('\n\n'):
    m = re.search('[Hh]ost\s+(?P<host_name>\w+)', line)
    if m is not None:
        hosts.append(m.group('host_name'))

hosts.sort()
print "\n".join(hosts)