Linux is full of powerful features, but some of its most useful commands rarely get the spotlight. They sit quietly in the background—until you discover them, and suddenly you can’t imagine working without them. From smarter file handling to system insights you didn’t know you needed, these commands can transform the way you navigate your machine. Here are 10 “hidden” Linux gems that become absolutely essential once you learn what they can do.
- fzf: Lightning-fast file and command search
- tldr: Simplified explanations for complex commands
- bat: A better alternative to cat
- ncdu: A visual way to find what’s eating your storage
- ripgrep (rg): Blazing-fast file content search
- htop: A clearer view of system resources
- watch: Monitor command output in real time
fzf: Lightning-fast file and command search
Fzf is a powerful fuzzy finder that lets you search through files, directories, and command history with incredible speed. Instead of typing full filenames or scrolling endlessly, you can jump to what you need almost instantly.
Fuzzy searching through files, folders, and history
Fzf scans everything you point it at and lets you filter results as you type.
- Search files in your project without remembering exact names.
- Browse directories and jump to paths instantly.
- Filter through shell history to re-run commands quickly.
- Integrate with tools like ripgrep, fd, or git for even smarter searches.
How it speeds up navigation and command recall
By replacing manual searching with instant filtering, fzf cuts down on wasted time.
- No more scrolling through long directory listings.
- Re-run complex commands without guessing or retyping.
- Combine with keybindings to open files or execute commands instantly.
Makes terminal navigation feel fluid and dramatically faster.
tldr: Simplified explanations for complex commands
Tldr gives you short, clear summaries of command-line tools, making it far easier to understand what a command does without digging through long, overwhelming man pages.
Short, practical examples instead of long manuals
Tldr focuses on real-world usage instead of dense technical details.
- Shows the most common command examples in a few lines.
- Avoids the clutter found in traditional manuals.
- Perfect for quickly understanding unfamiliar commands.
- Helps you apply commands immediately instead of deciphering jargon.
Perfect for beginners and fast lookups
Whether you’re new to Linux or just need a quick reminder, tldr delivers information fast.
- Ideal for learning commands without getting lost in complexity.
- Great for refreshing your memory on rarely used tools.
- Provides consistent, easy-to-read examples across commands.
Saves time by cutting straight to the point.
bat: A better alternative to cat
Bat enhances the classic cat command with modern features that make reading files in the terminal far more pleasant and informative, especially for developers and system administrators.
Syntax highlighting and line numbers
Bat automatically formats files so they’re easier to read at a glance.
- Adds syntax highlighting for dozens of programming languages.
- Displays line numbers for quick reference and debugging.
- Highlights changes when used with version control tools like Git.
- Makes large or complex files more readable than plain text output.
Easier file reading for developers and sysadmins
By improving visibility and structure, bat streamlines everyday file inspection.
- Great for reviewing config files, scripts, and logs.
- Helps you catch errors or misconfigurations more quickly.
- Integrates well with tools like grep, less, and fzf.
- Provides a cleaner, more polished terminal experience overall.
ncdu: A visual way to find what’s eating your storage
Ncdu turns disk usage analysis into a simple, interactive experience. Instead of manually running du and interpreting raw numbers, you get a clean, navigable overview of your storage.
Interactive disk usage explorer
Ncdu lets you explore storage the same way you’d browse files.
- Navigate through directories using arrow keys.
- Sort folders by size to instantly see what’s largest.
- Delete unnecessary files directly from the interface.
- Works great on servers where GUI tools aren’t available.
Quickly identify large folders and files
Its visual layout makes spotting storage hogs effortless.
- Pinpoint oversized logs, cache folders, or backups.
- Find forgotten downloads or temporary files.
- Track down sudden storage spikes.
- Saves time compared to manual scanning or scripting.
ripgrep (rg): Blazing-fast file content search
Ripgrep is a next-generation search tool that dramatically outperforms traditional grep. It’s optimized for speed, smart filtering, and ease of use, making it perfect for scanning huge directories or codebases.
Faster and smarter than grep
Ripgrep intelligently searches only what matters while staying incredibly fast.
- Automatically ignores files listed in .gitignore and other ignore rules.
- Searches through large projects significantly faster than grep.
- Supports powerful regex with better defaults.
- Efficient memory usage even on massive folders.
Ideal for coding, logs, and big directories
Whether you’re debugging code or sifting through system logs, ripgrep makes the process painless.
- Quickly locate functions, variable names, or patterns across your project.
- Instantly search thousands of log lines.
- Great for DevOps, developers, and power users.
- A must-have tool for any workflow involving deep text search.
htop: A clearer view of system resources
Htop provides a modern, colorful, and interactive way to monitor your system. It’s a huge upgrade from the classic top command, giving you real-time insights into performance with an intuitive interface.
Real-time CPU, RAM, and process monitoring
Htop makes it simple to understand what your system is doing.
- Displays CPU cores individually for detailed load insights.
- Shows RAM and swap usage with clear visual bars.
- Highlights resource-heavy processes automatically.
- Refreshes smoothly for accurate, up-to-the-second data.
Easier process management than top
Managing processes becomes effortless with htop’s interactive controls.
- Kill or renice processes using keyboard shortcuts—no codes needed.
- Sort by memory, CPU usage, or process name instantly.
- Scroll horizontally or vertically to see full command paths.
- Provides a far more user-friendly view for diagnostics and troubleshooting.
fd: A modern replacement for find
Fd is a user-friendly and much faster alternative to the classic find command. It keeps the power of file searching while removing the complexity and awkward syntax that often slows people down.
Simple syntax with faster performance
Fd focuses on speed and simplicity, making searches far more intuitive.
- Uses clean, minimal syntax that’s easy to remember.
- Automatically ignores .git folders and other irrelevant paths.
- Runs significantly faster than traditional find.
- Supports colorized output for more readable results.
Great for locating files across large projects
Whether you’re managing codebases or system directories, fd helps you find what you need quickly.
- Locate files by name or pattern with a single short command.
- Combine with tools like ripgrep or fzf for powerful workflows.
- Ideal for developers navigating large repositories.
Works smoothly in scripts, aliases, and shell workflows.
exa: A more readable ls with extra features
Exa upgrades the traditional ls command with modern visuals, clearer formatting, and more useful information. It makes directory browsing in the terminal far easier and more pleasant.
Color-coded directory listings
Exa organizes files visually so you can understand a directory at a glance.
- Uses colors to distinguish file types, symlinks, and permissions.
- Displays icons (when supported) for even clearer navigation.
- Highlights important details that plain ls often hides.
- Makes large directories easier to scan quickly.
Built-in tree view and file metadata
Exa includes features that typically require multiple commands or flags.
- Show directory structures with a clean built-in tree view.
- Display file metadata like permissions, owner, size, and timestamps.
- Easily view Git status indicators next to files.
Great for analyzing projects without switching tools.
ssh-copy-id: Painless SSH key setup
Ssh-copy-id simplifies the process of setting up passwordless SSH logins. Instead of manually copying public keys and editing server files, this tool does it all automatically and securely.
Add keys to servers automatically
Ssh-copy-id takes care of the tedious parts of SSH key installation.
- Automatically copies your public key to a remote server.
- Append it to the correct authorized_keys file.
- Sets proper permissions so SSH accepts the key.
- Eliminates manual file edits and permission mistakes.
Improves security and login speed
Using SSH keys isn’t just convenient—it’s safer.
- Avoids weak or reused passwords.
- Enables instant logins without typing a password each time.
- Protects servers from brute-force attacks.
- Encourages best practices in server and sysadmin workflows.
watch: Monitor command output in real time
Watch lets you run any command repeatedly and see its updated output as it changes. It’s perfect for keeping an eye on system activity, scripts, or logs without manually re-running commands.
Automatically refresh any command
Watch handles repetitive monitoring tasks for you.
- Runs a command every few seconds automatically.
- Highlights changes between updates for easier tracking.
- Lets you adjust refresh intervals with a simple flag.
- Removes the need to press arrow keys or retype commands.
Great for logs, server stats, and debugging
When you need to observe something as it happens, watch is invaluable.
- View live log output without opening a full log viewer.
- Monitor server metrics like disk usage or network stats.
- Track changes in files, processes, or scripts.
- Ideal for debugging issues that occur intermittently.