fabric ubuntu user management

fabfile.py

def group_exists(group):
    with settings(warn_only=True):
        resp = sudo('cat /etc/group | grep %s' % group)
    return not str(resp) == ""


def create_group(group):
    sudo('groupadd %s' % group)
    sudo('echo "%s ALL=(ALL) ALL" >> /etc/sudoers' % group)


def user_exists(user):
    with settings(warn_only=True):
        resp = sudo('cat /etc/passwd | grep %s' % user)
    return not str(resp) == ""


def create_user(user):
    sudo('adduser %s --disabled-password --gecos ""' % user)


def add_user_to_group(user, group):
    if not group_exists(group):
        create_group(group)
    if not user_exists(user):
        create_user(user)
    sudo('adduser %s %s' % (user, group))