Contains debug messages from the kernel
/var/log/debug file is a system log file that contains detailed debug messages from
the kernel and various system services. Debug messages are usually used by developers to
troubleshoot issues related to the system and applications.
Why is /var/log/debug Important?
/var/log/debug file provides more granular information than other log files, such
/var/log/messages. It is an invaluable resource for system administrators and
developers as it helps diagnose and troubleshoot problems that might not be apparent from other log files.
What Does /var/log/debug Contain?
/var/log/debug file contains detailed debug messages from the system and services. These messages include
information about the events happening in the system and how the system and its services are responding to these events.
Here is an example of what the content might look like:
Jan 27 16:24:52 myserver kernel: [ 123.456] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7]
Jan 27 16:24:52 myserver kernel: [ 123.456] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff]
Jan 27 16:24:52 myserver kernel: [ 123.456] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff]
Each entry in the file includes a timestamp, the name of the system that generated the log (in this case,
the source of the message (here,
kernel), and the actual message.
How to Use /var/log/debug?
tail -n 10 /var/log/debug
Remember, you might need root privileges to access this file.
Diagnosing Problems with /var/log/debug
Sometimes when you're facing a system crash or an application error, the messages
/var/log/debug can provide valuable insights into what's going wrong. By understanding the debug messages, you can
pinpoint the source of a problem and apply the necessary fixes.
/var/log/debug file is an essential part of Linux administration and debugging. This file provides a
wealth of information that can help you diagnose and resolve system and application issues. So, the next time you're
hunting for bugs or system issues, don't forget to take a look at