How to Check System Logs in Linux with journalctl

 Introduction

System logs are critical for troubleshooting issues. On systemd-based Linux, journalctl is used to view logs.

Step 1: View All Logs

journalctl

➡️ Shows logs from the system journal.

Step 2: View Logs for a Specific Service

journalctl -u sshd

➡️ Displays logs only for the SSH service.

Step 3: View Logs from the Current Boot

journalctl -b

➡️ Shows logs generated since the last system reboot.

Conclusion

journalctl provides a powerful way to analyze and filter logs, making it easier to diagnose system problems.