Follow systemd service logs linux
Stream logs for a systemd unit from the last 10 minutes
journalctl -u <service> -f --since '10 minutes ago'
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Check systemd service status
systemctl status <service> --no-pager -l
Capture traffic on interface
tcpdump -i eth0 -nn host <ip> and port 80 -w /tmp/capture.pcap
Check inode usage
df -i | sort -k5 -rn
List open files by process
lsof -p <pid>
Watch command output
watch -n 2 'kubectl get pods -n <ns>'