Log files are often the first place to look when something goes wrong on a Linux system. They can help explain why an application has crashed, why a service refuses to start, or what’s causing unexpected behaviour. The trouble is that logs can quickly grow to thousands of lines, making it difficult to find the information you actually need.
The traditional approach is to use commands such as cat, tail, less, and grep. These remain useful, but dedicated terminal log viewers offer a more convenient way to explore the information. Depending on the utility, you can follow new entries as they arrive, search and filter messages, highlight important events, or examine several sources at once.
These tools are useful for system administrators keeping an eye on servers, developers tracking down bugs, and anyone troubleshooting Linux problems. They’re particularly handy when working over SSH, where a graphical application may not be available or desirable.
Here’s our verdict captured in a legendary LinuxLinks-style ratings chart. Only free and open source software is eligible for inclusion here.
Click the links below to learn more about each tool.
| Terminal Log Viewers | |
|---|---|
| lnav | Powerful navigation, filtering and analysis of system and application logs |
| Nerdlog | Remote-first monitoring with powerful querying and filtering capabilities |
| lazyjournal | Browse systemd journal entries with intuitive keyboard controls |
| toolong | Tail, merge and search multiple files in real time |
| logrifle | Quickly browse and search records with a keyboard-driven interface |
| nless | Interactive pager with structured data navigation |
| MultiTail | Monitor multiple files simultaneously with colour-coded output |
| Logria | Aggregate multiple data streams with live filtering and highlighting |
| logana | Fast, interactive exploration with filtering and search |
| JSON Log Viewer | Explore structured JSON records with interactive filtering and navigation |
 Explore our carefully curated directory of recommended free and open source software, covering every major software category.The directory forms part of our extensive collection of articles for Linux enthusiasts. It includes hundreds of detailed reviews, together with free and open source alternatives to proprietary software from companies such as Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk. LinuxLinks also covers interesting projects worth exploring, Linux-compatible hardware, free programming books and tutorials, and much more. Know a useful free and open source Linux application that we haven’t covered? Tell us about it using our submission form. |
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