def get_command(options, vexrc, environ):
    command = options.rest
    if not command:
        command = vexrc.get_shell(environ)
    if command and command[0].startswith('--'):
        raise exceptions.InvalidCommand(
            "don't put flags like '%s' after the virtualenv name."
            % command[0])
    if not command:
        raise exceptions.InvalidCommand("no command given")
    return command
Returns the public key in PEM format without headers or newlines.
dataset/ETHPy150Open sashahart/vex/vex/main.py/get_command--crossover with--dataset/ETHPy150Open google/python-adb/adb/adb_protocol.py/AuthSigner.GetPublicKey