<filename>thefuck/rules/cat_dir.py
import os

from thefuck.utils import for_app


@for_app("cat", at_least=1)
def match(command):
    return command.output.startswith("cat: ") and os.path.isdir(
        command.script_parts[1])


def get_new_command(command):
    return command.script.replace("cat", "ls", 1)
