import os

COMMANDS_PREFIX = 'cd-'


def cd_list_environment():
    for variable, value in sorted(os.environ.items()):
        print(variable, '=', value)


def install_commands(path):
    user = '/usr/local/bin'
    for command in ['list-environment']:
        os.symlink(path, os.path.join(user, f'{COMMANDS_PREFIX}{command}'))