gistfile1.py

from fabric.api  import put, sudo
from os.path     import join, basename

HOME        = '/home'
SHELL       = '/bin/bash'
SUDO_GROUP  = 'sudo'

def adduser(username, sshpubkey=None, admin=False):
    sudo('adduser --gecos \',,,\' --home %s --shell %s --disabled-login %s' % \
        (join(HOME, username), SHELL, username))

    # If a public key was given, copy it over.
    if sshpubkey: copy_sshpubkey(username, sshpubkey)

    # Give admins sudo access
    if admin: sudo_access(username)

def copy_sshpubkey(username, sshpubkey):
    path = '/home/%s/.ssh' % username
    sudo('mkdir -p %s' % path)
    src = join('/tmp', basename(sshpubkey))
    put(sshpubkey, join('/tmp', basename(sshpubkey)))

    # Permissions / ownership
    dst = join(path, 'authorized_keys')
    sudo('mv %s %s' % (src, dst))
    sudo('chmod 700 %s' % path)
    sudo('chmod 600 %s' % dst)
    sudo('chown -R %s: %s' % (username, path))

def sudo_access(username):
    sudo('adduser %s %s' % (username, SUDO_GROUP))