Logs & Auditing

Articles in Logs & Auditing

• How to see last logins → last, lastlog, faillog

  Learn how to monitor user login activity on Linux systems using last, lastlog, and faillog commands. Complete guide with examples, troubleshooting, and best practices.

• How to set audit rules → auditctl -w -p rwa -k

  Learn how to set Linux audit rules using auditctl -w command. Complete guide with examples, troubleshooting, and best practices for system monitoring.

• How to report audit summary → aureport

  Learn how to generate comprehensive audit reports using aureport command in Linux. Complete guide with examples, troubleshooting, and best practices for system administrators.

• How to search audit logs → ausearch -k

  Learn how to search Linux audit logs using ausearch -k command. Complete guide with examples, troubleshooting, and best practices for system administrators.

• How to send a test log → logger "hello from logger"

  Learn how to send test logs to loggers with "hello from logger" examples. Complete guide covering Python, Node.js, Java logging with code snippets and troubleshooting.

• How to vacuum old logs → journalctl --vacuum-time=7d

  Learn how to manage systemd journal logs efficiently using journalctl --vacuum-time=7d. Complete guide with examples, troubleshooting, and best practices.

• How to show logs since time → journalctl --since "2025-08-01"

  Learn how to use journalctl --since to view system logs from specific dates and times. Complete guide with examples, time formats, and troubleshooting tips.

• How to show logs for a unit → journalctl -u

  Learn how to view systemd unit logs using journalctl -u command. Complete guide with examples, filtering options, troubleshooting tips, and best practices.

• How to follow live logs → journalctl -f

  Learn how to monitor live system logs in real-time using journalctl -f command. Complete guide with examples, filtering options, and troubleshooting tips.

• How to read system logs → journalctl

  Master journalctl command to read, filter, and analyze system logs in Linux. Complete guide with examples, troubleshooting, and best practices for log management.