Logs

Path

/var/log

Log Types

• apt/history.log
  • pkg install and removal info
  • includes the initial system build as Live CD
• boot.log
• kern.log - kernel info, such as warnings, errors, ...
• syslog - System logs, such as kernel activities
• Xorg.log - graphics driver, its failures, warnings, etc.

journalctl

journalctl --list-boots

Logging is mostly handled by the journalctl utility.

journalctl - provides required logs.

Logs are stored in binary in /var/lib/systemd/catalog/database file.

This file enumerates all logs incl. kernel, boot and app logs.

See also: Basic Log Viewing.