lnav is a powerful and versatile log file viewer designed to make analyzing log data as simple as possible. It provides a text-based interface for viewing and filtering log files, and it has several advanced features for searching, highlighting, and summarizing log data.
lnav supports a wide range of log file formats and provides an easy-to-use interface for analyzing log data, making it an essential tool for system administrators and developers who work with log files on a regular basis. It also provides the ability to aggregate logs from multiple sources, and its built-in script support makes it easy to automate log analysis tasks.
If you encounter the below error while running the command lnav:
lnav: command not found
you may try installing the below package as per your choice of distribution:
| Distribution | Command |
|---|---|
| Debian | apt-get install lnav |
| Ubuntu | apt-get install lnav |
| Kali Linux | apt-get install lnav |
| Fedora | dnf install lnav |
| OS X | brew install lnav |
| Raspbian | apt-get install lnav |
lnav Command Examples
1. View logs of a program, specifying log files, directories or URLs:
# lnav path/to/log_or_directory|url
2. View logs of a specific remote host (SSH passwordless login required):
# lnav ssh user@host1.example.com:/var/log/syslog.log
3. Validate the format of log files against the configuration and report any errors:
# lnav -C path/to/log_directory