bat — The cat Replacement That Makes Terminal Work Beautiful

What is bat?

bat is an open-source CLI tool that replaces the classic Unix command cat with modern features like syntax highlighting, line numbers, and Git integration. Written in Rust, it runs on Linux, macOS, and Windows.

If you work with logs daily or inspect files on the command line, you’ll appreciate bat immediately. Instead of plain monospace text, you get color-coded syntax, line numbers, and a smart paging system that knows when you actually need a pager.

Core Features

Syntax Highlighting — bat uses Sublime Text syntax definitions to correctly colorize hundreds of file types. Whether it’s Python, Rust, JSON, or shell scripts — the colors are right there from the start.

Git Integration — When you open a file inside a Git repository, bat automatically shows which lines have been modified, added, or deleted. The margin indicators are instantly recognizable at a glance.

Intelligent Pagination — bat automatically invokes a pager (usually less) when output is too long for your terminal. But when the file is small enough, it just displays it directly.

Line Numbers — The -n flag gives you line numbers — perfect for discussing code or tracking down bugs.

Themes — You can customize the color scheme and use various built-in or external themes.

Why bat instead of cat?

The original cat just outputs raw text. When you run cat myfile.py, you get everything in standard monochrome. bat does the same thing with significantly better readability:

• Colors help you understand code faster
• Line numbers make bug reporting easier
• Git markers immediately show what has changed
• Less eye strain when reading through long log files

On top of that: bat is a drop-in replacement. Just add alias cat=bat to your .bashrc and everything keeps working as before.

Installation

bat is available in most package managers:

macOS:

brew install bat

Linux (Debian/Ubuntu):

sudo apt install bat

Linux (Fedora/RHEL):

dnf install bat

Windows (Chocolatey):

choco install bat

All platforms: You can also clone the source and compile with Cargo if you need a more recent version.

Use Cases

DevOps / SRE: Log analysis becomes much more pleasant with bat. Errors and warnings jump out immediately thanks to syntax highlighting.

Backend Developers: Quickly checking a config file, reviewing a log, or inspecting API responses — all with better readability.

Data Teams: CSV or JSON files with syntax highlighting are less error-prone to debug.

Bash/Zsh Power Users: As a default replacement in everyday CLI work.

Limitations

bat is CLI-only. If you need a GUI or prefer Visual Studio Code, this tool isn’t for you. Beginners will also need to get comfortable with the command line first, though there’s plenty of documentation and bat itself has a very short learning curve.

Conclusion

bat is the perfect upgrade if you spend your days working on the command line. Free, open source, actively maintained. Installation takes 30 seconds, and from there you save a thousand small moments every year — simply because your code looks better and reads easier.

For CLI enthusiasts: an absolute must-have.