Linux
2 sections tagged Linux.
Quick note
Quick reference
Questions & answers
Part 13: Linux Deep Dive
- Walk me through what happens when a Linux system boots
- How do you troubleshoot high CPU on a Linux server
- Explain file permissions and how you'd debug a permission denied error
- What's the difference between a process and a thread
- How does the kernel interact with containers
- How do you troubleshoot a Linux server that's responding slowly
- What's the difference between a hard link and a soft link
- How does file permission work for a process running as a specific user
- What happens when you run a command in the terminal
- strace, lsof, and tcpdump — what they do and when to use them
- The /proc filesystem — what it is and why it matters for troubleshooting
- systemd — systemctl, journalctl, unit files, and target dependencies
- iptables and nftables — basic rules and how Kubernetes uses them
- Kernel namespaces and cgroups — the foundation of containers