Bandit Level 1 -> 2 - Non-Standard File Names

Challenge Overview

Category: Linux Basics, Command Line Navigation

Difficulty: Beginner

In Level 1 of OverTheWire Bandit, we encounter a file with an unusual name: a single hyphen (-). The challenge is to read its contents despite the filename conflicting with common command-line syntax. This level introduces key techniques for handling files with non-standard names in Linux.

Walkthrough:

Step 1: Listing the Directory

First, we use the ls command to check for files in our home directory:

ls

This returns:

-

We can see there’s a file named -, but trying to read it with cat - won’t work as expected, because - is often interpreted as an argument rather than a filename.

Step 2: Use command line tricks to execute cat

To tell the shell that - is a filename rather than an option, we use ./, which explicitly specifies the current directory:

cat ./-

This successfully displays the contents of the file, revealing the password for the next level:

263JGJPfgU6LtdEvgfWU1XP5yac29mFx

Key Takeaways:

• Handling Unusual Filenames: Prefixing filenames with ./ ensures they are interpreted correctly.
• Understanding Command Behavior: The hyphen (-) is commonly used as a placeholder for standard input in Unix-like systems, which is why cat - alone doesn’t work.
• Command-Line Flexibility: Learning how to manipulate file paths is crucial for working efficiently in Linux.

With this challenge complete, we should now have a solid understanding of how to handle tricky filenames in the shell. On to the next level!